Okay. Well good morning to all of you and thank you for taking the time on this very difficult day for the markets to join us. This is one of these days in which most of you are glued to screens looking at what happens in Vienna and what we can envisage for the very near future on the energy sector in general on a worldwide scale. We are looking closely to what happens to the Brent crude as well as what happens -- what is happening right now with the taxes intermediate which are on very low levels as you know. Let's say that crude has declined by almost a third since January. So, this impacts all of us without any doubt. But let's assume for this call that the coronavirus outbreak is largely contained in the second half of the year at least we have to make some bold assumptions no matter what. So -- but let me focus a bit on Argentina because we are also living challenging times in Argentina. And, of course, Daniel Gonzales will explain to you the results of last year as well as what's going on and we can -- what we can envisage about the macro scenario that will make a very important impact on the decisions to come. So, let me say just to round this up this introductory statement and I'm very proud I'm very committed to lead a company that has a 100-year history. A company that has discovered the main oil and gas bases in Argentina and pioneered the development of the energy sector in shale which is which was something new at the time and very important. It's also the fifth electric generator of Argentina. So, in a short, we can say that YPF is really a very important contribution to the Argentina economy. So, I'm fully committed in this very difficult international and national times to contribute to steer the company through increasing value for our investors. And this is my main goal. So, in that respect, I want to convey to you that I'm fully committed to proper lap and to steer this big ship through this storm as we can may qualify the situation today. So, keeping our fingers cross, I will pass the word to Daniel and he will enter into the detail of the management and the results of last year and then we'll move forward to the questions you may have. Thank you very much.
Daniel González: Thank you, Guillermo. Good morning everybody. And before we begin I would like to ask you to carefully review the cautionary statement on slide 2. We will be making forward-looking statements that refer to our estimates to our plans and expectations that could differ materially due to factors we note on this slide. And also although our financial currency is the U.S. dollar, our financial statements are published in Argentine pesos based on IFRS. And on this occasion, to let you better understand our key financial and operating results, unless otherwise explained, the calculation of the main financial figures is in U.S. dollars unless derived from the calculation of the consolidated financial results expressed in Argentine pesos using the average exchange rate for each period. 2019 was a very difficult year for Argentina for the local oil industry and for YPF. We operate in a very adverse context and believe we have performed extremely well in managing the different variables under our control; strong operating cash flow, financial discipline, reduction in OpEx, and improved oil production performance, especially in unconventionals. We now obtained about 90% of our revenues in Argentina and the local economy was particularly weak with a GDP reduction of 2%, internal consumption down more than 5%, inflation of almost 54%, and the evaluation around 60%. Although international crude oil prices were below the previous year, local prices were further affected by the devaluation in the first half of the year and by the freeze, the previous government put in place in August. Average local fuel prices expressed in dollars were the lowest of the last 10 years. In addition, natural gas local market prices were also well below the previous year, mainly as a consequence of a natural gas glut resulting from the subsidy known as Resolution 46. The imposition of capital controls and the volatility around the presidential elections added to the negative investment climate in 2019 that YPF needed to adapt to and that Ignacio will later explain we did react rapidly and adjusted CapEx and OpEx in the fourth quarter. However, our low breakeven shale oil projects has allowed us to maintain a level of activity well above that of our competitors, therefore, with less affection of long-term growth prospects. In this context, full year revenues were down 11% to $13.7 billion and EBITDA was down 18% to $3.6 billion, just an inch short of our last guidance. However, operating cash flow stood very strong at $4.3 billion in line with 2018. Therefore, net debt remained essentially flat, in line with our commitment to strict financial discipline. Full year earnings were negatively affected by the net impairment of our natural gas assets for $540 million which had been recorded in the third quarter as a consequence of the lower price environment we expect for the near future. No further impairment was recorded in the fourth quarter. Now, let me do a review of last year's operations going through some main highlights and then share a flavor of what we are seeing for 2020. We took advantage of our broad portfolio to allocate capital in a more profitable projects which are all crude-oil oriented. Natural gas resources are vast and the results of our last wells in different shale blocks were all great, but low local prices and an oversupplied market thus incentivized our investments and therefore, we shifted all of that activity to the oil window. Therefore, we consolidated our shale oil investments in the cluster around Loma Campana, La Amarga Chica, and Bandurria Sur, achieving significant improvements that resulted in that breakeven price reduction I just mentioned. We know we do not control commodity prices, but we do control the breakeven price at which projects are profitable and the combination of increasing productivities and a reduction in CapEx resulted in such reduction in breakeven prices for Vaca Muerta. We also invested in delineation of additional potential development clusters with encouraging results in the north of the play in Bajo del Toro where we are partners with Equinor and are already drilling a six-well pad these days. And those are just South of Loma Campana, but with less clear results in other areas that we will not be pursuing for now. And as I have repeatedly said in the past, this is not just about Vaca Muerta. Last year after encouraging results in two pilot projects, we announced the decision to massively deploy enhanced oil recovery. I'm very proud to announce that we already have our first 10 polymer injection units displayed in our fields. And we are about to make a final investment decision for another 10 injection plants to be installed this year. During 2019, we continued the divestment of non-core mature assets by closing the sale of four conventional blocks in Neuquén and additional two in Chubut. We also secured high-quality shale oil acreage first by purchasing 14,000 acres in Aguada del Chañar, which is contiguous to La Amarga Chica. In addition, we were granted a 35-year unconventional concession for Loma de Maria block, a 43,000 acre position also situated in a shale oil window. This year we intend to start development of Aguada del Chañar as it has similar geological properties to the nearby fields, and we therefore believe it is mostly derisked, and also to conduct a pilot project in Loma de Maria. We are also announcing today the sale of an 11% interest in Bandurria Sur to Shell and Equinor to add to the 49% stake they recently acquired from Schlumberger. This transaction has been done at the highest price multiple paid so far in Vaca Muerta. And it also reaffirms our strategy started in 2012 to develop and conventional with first-class partners. Another transaction that I would like to highlight at this time is in the deep offshore off the coast of Argentina. We obtained three blocks in the bidding round in April that were added to CAN 100 block where we already had rights. In all cases with best-in-class operating partners like Equinor and Total. And furthermore in CAN 100 block in addition to the farm-out already announced with Equinor we are currently in advanced negotiations with a third partner that should be entering the block very soon. With this transaction, this block is an opportunity that we can initially pursue with very limited financial exposure. With respect to natural gas, we set as a priority to minimize production cuts due to lack of demand outside of the winter peak season. We activated different levers, the FLNG barge that allowed us to export LNG out of Argentina for the first time in history, although, at current global LNG prices, it doesn't add to the P&L of course, a more aggressive participation in auctions for both residential and power demand, and a significant increase in our exports to Chile that ranged from 2 million to 3.5 million cubic meters a day on a monthly basis in the mild season. In addition, we started our natural gas storage project in a depleted reservoir in Neuquén where we are already injecting gas with the objective of injecting 1.2 million cubic meters per day during eight months and then with growing 2.4 million cubic meters per day during the other four months. Finally and despite all the turmoil in Argentina in 2019, we successfully managed to rollover or replace all our short-term maturities, including trade finance, maintaining our nominal debt almost flat. We also accessed the international capital markets when we saw a small window in mid-year and issued a 10-year $0.5 billion bond. On the ESG side, I am proud to share with you the progress we have been making and that is best shown with the score we would have had if we were part of the Dow Jones Sustainability Index, which has been assessed by a third-party and that puts us among the top 15 companies in our industry. You can see that in the right-hand side of the slide. Safety of our personnel is our priority and the injury frequency ratio improved again this year to an all-time record. In 2018, we have launched a policy for operational excellence that is part of a cultural change that we are trying to create. However, in 2019 we were not able to avoid some fatal incidents from contractors working for us. There's still a long way to assure that all of our suppliers and contractors have a culture commitment and skill set that we require to work in YPF. With respect to emissions, we set an objective of reducing them by 10% by 2023 and are making good progress with a 2% reduction in 2019 based on our energy efficiency initiative across the whole organization on production cuts in CO2 incentive fields -- sorry, CO2 intensive fields and renewable energy through YPF Luz. We chose wind and already have one wind farm in operation and another three under construction. When they are finalized later this year, YPF Luz will generate from renewable sources, the equivalent of more than two-thirds of what YPF consumes in it's entire upstream and downstream operations. We are IMO 2020 fully compliant and are investing heavily in our refineries to reduce the sulfur content of our fuels. As not only we want to make our operations cleaner, but also offer cleaner products to our customers. In summary, we have a full ESG agenda and significant achievements to show off. Moving onto the upstream operations. In 2019 and despite the challenging pricing scenario, we have been able to maintain again our proven reserves above the 1 billion BOE mark, as we have been doing successfully over the last 10 years, which underscores the depth of our resource base. The 96% reserve replacement ratio was all organic and we can see how our high-quality shale reserves have grown to represent 31% of total proven reserves. Maybe the other relevant change has to do with the reserve composition, as liquids now represents 63% of proven reserves, up from 50% a couple of years ago. Total hydrocarbon production was 3% below the previous year in line with our last guidance, but in the fourth quarter was actually 5% above the same quarter of 2018. Crude oil production during the year remained almost unchanged at 227,000 barrels of oil per day. And it is worth mentioning that by the end of 2018 and in July 2019, we completed the divestment of a few mature fields that together representing -- represented an average of 2,400 barrels per day. Therefore pro forma oil production would have been up vis-à-vis 2018. Regarding natural gas, as we have been discussing the local market experienced an oversupply. Actually demand was slightly lower than in 2018 mainly in the power generation segment. Consequently, gas production decreased 5% to 40 million cubic meters per day in the year, but again was up 10% in the quarter. Moving now to shale as shown in the graph on the right, we have steadily increased production during the year and shale now represents 18% of our total hydrocarbon production, compared with 11% in 2018. Net shale oil production in the quarter showed an increase of 48% compared with the fourth quarter of last year reaching 40,000 net barrels per day. And we have added another 3,000 barrels in the last two months. So far we have always compared our performance with our own past performance showing continuous improvement. This time we decided to also share benchmarking against average performance in the different U.S. shale plays using IHS information. The graph on the left shows that YPF actual productivity in the oil window of Vaca Muerta is better than the average of selected U.S. plays. The bars in dark blue represents the production per stimulated lateral meter for Loma Campana, La Amarga Chica and Bandurria Sur in 2019 and 2018. The graph on the right shows the development cost for those same areas. Again the comparison shows not only our progress but the competitiveness we have achieved. Still we are not yet first-in-class, but we are definitely aiming to get there. La Amarga Chica and Bandurria are still $2 to $3 above Loma Campana, which has a much higher scale and longer history. And there is definitely an improvement of opportunity we should be achieving soon. Some initiatives recently put in place that partially explain this performance. We implemented for instance water based mud on the drilling stage that by the way also has a positive impact on the environment. We optimized well design, migrating to use 6.75-inch casing, improving the rate of penetration, also we upgraded a quarter of the rig fleet to high spec. At the moment we count with six high-spec rigs and we will have all of our rigs upgraded during this year. With all of this, we will definitely reduce our drilling days. We also keep going longer on our laterals. For instance, we are putting 64 frac stages in one four-kilometer long well. Every single well is steered, every single well is stimulated using high-density completion and we are not done yet. Bandurria Sur is one of our main shale oil blocks and I believe provides a good example of how we intend to create value without taking an irrationally high exposure for a company of our size. We obtained a noncommercial concession in 2015 that entails significant commitments. Subsequently in 2017, we farmed out 49% of the block to Schlumberger at a $7,200 per acre valuation. At the time, the field did not have a single horizontal well. Schlumberger carried us in the investments needed to derisk the block while we jointly decided to accelerate the development of the core southeast part of the block. In 2019, Schlumberger decided to exit this type of equity investments globally and run a sale process that resulted in shale in Equinor jointly acquiring their stake and evaluation above $12,000 per acre. And this was approximately a month ago. Now shale and Equinor already partners of YPF in other shale oil areas are also acquiring an 11% stake from us at a premium. So we have a more balanced shareholder structure 40/30/30 where YPF remains as the operator. The implied valuation is $14,000 per acre with -- but as a pilot demonstrated that not all of the acres are developer -- developable. The real multiple is still higher per developable labor. These years of transactions show the success of our model of bringing along partners to help us derisk and increase value of our assets and it highlights the underlying value of our Vaca Muerta acreage. In 2019, we committed to replicate the excellent results we had obtained in Loma Campana in the adjacent areas of La Amarga Chica and Bandurria. With the objective of expanding this core shale oil development hub. Last year, together with our partners we invested $1.3 billion in these areas and we have agreed to invest almost 40% more in 2020 to continue with ramp-up in production. By April 2019, we started evacuating our crude oil through the new 88-kilometer long Loma Campana, Lago Pellegrini pipeline, pumping production from this hub to the trunk pipeline system. We are doubling the capacity of our Loma Campana oil drilling facility and building new ones in each of the other two core blocks. We're also expanding our sand plant to ensure that we can cope with the increase in activity while keeping control on costs and achieving last mile efficiencies through the utilization of our own sand boxes. The bottom of the slide, we can see the full development for each of these fields where we view a plateau production above 75,000 barrels per day in each of them and actually much higher in Loma Campana. And that hub can still grow as we have recently acquired acreage to the east in Aguada del Chañar and we also have to the west with Pluspetrol in La Calera and there are still other areas to be derisked. We believe many of our conventional fields are old but not necessarily too mature as recovery factors are still low and can grow from an average of 25% after secondary recovery to an average of 33% with tertiary recovery. That is why in 2018, we decided to take EOR more seriously. And after a few years in pilot mode, we made the decision of accelerating its development. We purchased and installed 10 polymer injection plants in the Golfo San Jorge and Neuquina Basin -- Basins. And the initial results of the first two plants in Grimbeek in Chubut were better and faster than expected as shown in the graph at the top. The 10 plants implied an investment of $150 million including the repair of a few injection wells and should accumulate 29 million barrels from oil from these three different fields as we can see in the bottom left. Now that development already in motion only represents a tiny fraction of the recovery resources that we are visualizing if we keep investing tertiary as we can see in the bottom right. Of course, we are only scratching the surface. There's plenty of learning ahead and the response in the form of increased oil production and therefore the reduction of the water cut usually takes time. But its definitely a great complement of the more front-loaded behavior of the shale. Moving onto natural gas. I mentioned the reduction of production cuts objective. We believe it is working. Gas production in the fourth quarter of 2019 and very likely in this first quarter of 2020 as well is significantly higher than comparable periods precisely because of that. On the other hand, the significant recent reduction in drilling will result in less available gas during the winter. The different shares in each market segment also points to a successful commercial strategy as we are not dependent on the less attractive power segment. Vaca Muerta now purchases all the fuels and has been conducting monthly auctions, although they are sending a very positive sign of potentially entering into multi-year take-or-pay agreements. We also did well in exports, although it's still small and we believe both the market and our share in that market should grow. Now prices have come down by almost 20% last year to an average of $3.07 per million BTU and we expect them to come down again this year. But we are bottoming and should start going up as there is almost no activity in natural gas development these days, and therefore, supply will decline. Changing to our Downstream business segment, the fuel market was obviously slow in line with the rest of the economy with gasoline sales down 1.4% and diesel sales down 2.1%. Jet fuel demand was strong and most of the rest of the refined products were also up with the notable exception of asphalts where the collapse in public works resulted in historically low volumes. Our market share was slightly below the previous year where it had been unusually high, but these levels in the 55% to 56% area should be sustainable. At the same time, premium products under our INFINIA brand had a positive performance and represent 27.5% of each of gasoline and diesel total sales. In the case of diesel, this represents a slight improvement, but in the case of gasoline, a decline vis-à-vis the previous year, but with a recovering trend towards the last part of the year. With respect to prices, the year was really volatile. The graph on the right shows our blended price of gasoline and diesel compared with what we call objective prices, which are built based on import parity, plus the effects of biofuels, internalization costs and the margin. There, we can see that we started 2019 with prices just in line with that objective price. When the economic situation deteriorated in Argentina and simultaneously international prices recovered, we started to fall behind, but gradually caught up towards mid-year. That is when the peso suffered its worse devaluation of the year and the previous government decided to freeze prices. That resulted in a gap of 15% or higher. But again, we significantly recovered with price increases first in the wholesale market and then in the retail market towards the end of the year. The catch-up that can be seen for the first months of 2020 is a consequence of international price declines and not of local price increases. Currently and of course depending the average being used for international prices given the high volatility we are experiencing we only have a 5% to 8% gap in gasoline prices, while diesel prices do not need any increase. It is the first time in quite some time that we spend a few minutes to talk about our power generation subsidiary branded YPF Luz. My objective with this slide is to highlight how we created value for YPF shareholders, building a company that this year we'll have a generation capacity of 2,500 megawatts and we'll generate $265 million of EBITDA without contributing any capital from YPF. Projects under construction are fully funded. Over 80% of its capacity is sold under long term dollar-denominated contracts, a good part of them with YPF and other industries. And by the end of the year, it should be generating over 400 megas of renewable energy. The company is run by its own management team and it's co-controlled by YPF and GE. Now, I'd like to ask Ignacio to go through some of the numbers for the quarter and also discuss our balance sheet.