Thanks, Derek and good morning, everyone. Before I begin, I too would like to thank our team. 2018 was a challenging year for our company as we face rising fuel prices, difficult weather conditions, the uncertainty of trade wars and the early stages of government shutdown. Despite these challenges, our team did a fantastic job of taking care of customers and each other. These are actions most certainly made the difference and demonstrated our resiliency. We’re a team that collaborates, adapts and continues to move forward. So from all of us, thank you again for a job well done. Operationally since the merger, we've been making steady progress in improving our core operating metrics but we fell short in 2018 of our targets. On our last earnings call, we highlighted some of the initiatives we are undertaking, including making the fleet ready to go each morning, making sure that we resource our team to turn aircraft throughout the day. We also continued to evaluate and fine-tune our planning processes to ensure that we are ready to deliver better service during peak schedule periods. These efforts are starting to pay off. During the December holiday period, our system-level on-time departure performance improved by 4.5 points year-over-year and our completion factor improved by 1.3 points. At the hub level, we saw double-digit improvements in on-time departures at Reagan National, New York JFK and LaGuardia and Philadelphia. We also saw 25% improvement in mainline aircraft out of service during that same period. We’re encouraged with the progress we've made thus far and look forward to keeping that going in 2019. We also completed another major integration project in the fourth quarter, the integration of our 27,000 flight attendants. This is an important milestone and our largest and most complicated integration project to-date. It involves program and new work rules and managing complicated pay processes in line with those work rules. Importantly, training schedules and a multitude of other pieces have to work perfectly for this very important team. We’re starting to see the benefits of our flight attendance now that they can fly on any aircraft at our fleet and they also have the flexibility to transfer to different bases. For our customers, we'll be able to recover much more quickly during regular operations as we can inter-mix crews. And for about the company and product attendants, we'll get a lot more efficient with scheduling our aircraft and team members. Switching gears from integration work to product. Throughout 2018, we made great progress improving the overall experience for our customers. We’ve invested $25 billion in our team in our facilities and our product and fleet since we merged five years ago. That $25 billion represents the largest investment of any carrier in the history of commercial aviation in such a short time period. These investments are transforming our product and creating a consistent and reliable airline for this coming year and long into the future. On the product side, we've now activated free live TV on 270 aircraft and we continue to be the only U.S. carrier to offer live television on international flights. We believe our customers want faster and more consistent connectivity for work and to stream entertainment to their mobile devices. Our installations of high-speed Wi-Fi and in-seat power throughout our long-term domestic fleet are on track with 570 mainline narrow body aircraft already complete. All planned narrow bodies will be done by the middle of this year. And if you haven’t experienced the ease and speed of this connectivity, you're in for a terrific experience. In addition, we launched new fresh food items from Zoe's kitchen in our main cabin, and the uptake has been extremely positive. We're also growing our network of flagship first dining and flagship lounges with DFW opening in the second quarter. Our most club network updates are also underway with facility refresh projects in Boston, Charlotte, B Concourse and Pittsburg in the first half of 2019. For network, we had a new international service in 2018 to Reykjavik, Budapest and Prague, which were all very well received by our travel agent and cruise partners. This year we'll continue to play to our network strengths with high margin growth plan for Dallas-Fort Worth and Charlotte hubs. At DFW, we're adding 15 new gates and roughly 100 departures per day. These additional departures will begin in April. And importantly, this capacity will be added into a robust and in first local economy here in Texas, which is one of the fastest growing U.S. markets, both in terms of GDP and wages. We'll also add new transatlantic service to the Tuscany region of Italy, Berlin, Germany and Dubrovnik, Croatia, out of our hub in Philadelphia. And lastly in Washington DC, construction continues on the new regional terminal in DCA. We're expecting completion of that regional terminal in 2021, sounds like a far update it will come quickly and will be ready. Our plans include up-gauging aircraft to further grow this important market. Our global sales and distribution team is executing well in their initiatives, producing overall corporate revenue growth that is outpaced to system revenue growth. We will continue to build and diversify our portfolio of small business accounts that have historic pace, and we're seeing a record number of these small business accounts graduate into entry-level corporate contracts at a rate that is nearly 10 times that of last year. In growing our small business programs, we are not only delivering strong results today but we are also establishing a foundation for growth in the long-term. In addition, we have launched both TripLink and additional international forms of payment to grow direct bookings. For our loyalty program, 2018 marked another year of revenue growth, which grew by high-single digits on a year-over-year basis. We continue to see strong year-over-year growth in advantage program enrollments and cobranded credit card acquisitions. Our 2018 improvements in the Citi Advantage platinum select MasterCard and the launch of the no fee AAdvantage MileUp card provide added value to customers and we're really seeing the revenue benefits of this expanded portfolio. Our Citi platinum and Aviator Red MasterCards remain our most popular cards and the new AAdvantage MileUp card is exceeding our expectations. And our Citi AAdvantage executive card acquisition saw growth as well, reflecting strength across range of card segments. With a record number of co-branded AAdvantage MasterCard acquisitions in 2018, we believe our dual issuer model is delivering attractive choices for our customers. We expect these strong results to continue for our program in 2019. Product segmentation has added another dimension to our business, and our strategy continues to perform very well. In 2018, we added premium economy to more than 100 aircraft out of a total of 124 planned aircraft. American has more aircrafts with premium economies than any other U.S. airline. The average fare for premium economy continues to be twice the coach fare. And when we look at the booking profile for this product, it is clear that customers are buying up from the main cabin. Installations remain on track and we expect them to be complete by this summer. Looking forward, we will further monetize premium economy with new revenue management and merchandising capabilities. Basic economy has also been expanded and we now offer this option across the entire domestic network, as well as most the Atlantic, Caribbean, Mexico and Central America. We have made a number of refinements to the program to ensure that we are competitively considered, including eliminating the carry-on bag restriction. With this change, we are now able to roll out our full range of fares to more than twice as many customers as before. Since this change, the average up-sell rate continues to be around 60%, which has exceeded our initial expectations. In addition, the sell-up amount is increased by $5 and is now approximately $26. All of this is resulted in record fourth quarter revenue of $10.9 billion, up 3% year-over-year. As Derek mentioned, we saw solid growth in other revenues, driven in part by continued strength in co-brand credit card acquisitions and cardholder spend. At our unit revenue basis, total revenue per available seat mile improved 1.7% year-over-year. This marks the ninth consecutive quarter of positive revenue growth for American. When looking across the regions, the Atlantic was the best performing entity for the third consecutive quarter as we are able to grow load factors with only a minor impact on yield. Basic economy is doing well as is premium economy, and we see no impact from Brexit at this point. Moving to land, although slightly negative, we did see quarter to quarter improvements in Argentina, Brazil and Mexico, which is encouraging. Foreign exchange had a negative impact on the quarter of 1.6 points. In the Pacific, the weaker markets got better while the better markets, Japan and Korea, got a little bit worse. We are negatively impacted by the timing of joint business settlements by approximately 2 point and foreign exchange by half of point. Despite very difficult comps, we saw improvements during the quarter in domestic yields, in part due to selling basic economy higher up the fare ladder and expanding into more markets. Looking forward, we are head on load factor each month as we see strong build further from departure. We are excited about our planned growth in DFW, which marks our first opportunity for sizable growth at one of our most profitable hubs since the merger. We faced headwinds in the March quarter of 0.5 point due to Easter shift, 0.7 points due to foreign exchange and 0.7 points from our advantage program, which is due to the big investments we have made over the past year in the program, making it much more valuable to our customers. We significantly increased the inventory available for redemptions in 2018, giving our customers more flexibility to use their miles. The net result of this change is that we'll be deferring more revenue from 2019 for recognition in later years. For the year, we expect the non-cash impact of 0.7. Even with these headwinds, we expect our first quarter year-over-year system TRASM to be up between zero and 2%. As we look forward into 2019, we are excited about what the future holds for American Airlines. Now that most of the distractions of integration are behind us, we are intently focused on running the best operations in America's history, improving our product and capitalizing on our network. We have more than $1 billion in revenue initiatives that we are confident that we will deliver, and we feel really good about how these are shaping up. We will continue to expand premium economy and fine tune how we offer basic economy across our network. We also expect to continue our fleet harmonization project and further optimize how we sell that product. And we expect to become more efficient with more than $300 million in cost initiatives in our plan. All of these initiatives are on track and expected to be earnings accretive this year. We’re excited about the future and look forward to sharing these results as the year progresses. And with that, I would like to turn the call back over to the operator to begin our Q&A session. But first, we are going to give it to Doug.