Thanks, Nene and Tyler, and good morning and thank you, all, for joining us on our first quarter 2012 earnings call. I want to take the opportunity to thank Zane Rowe, our former CFO, for his leadership over the past 19 years. I wish him all the best in his new role with Apple. We have a strong and deep management team, and John Rainey was the clear choice to take over this important role. John is a seasoned finance professional, with many years of airline experience, and my entire team looks forward to working together with him in his new role as CFO. Moving on to our financial results for the quarter. Today, we reported a net loss of $286 million or an $0.87 loss per share. This was a challenging quarter for United, marked by rising fuel prices and revenue challenges. While we are disappointed to report a loss for this quarter, we remain focused on turning United into a business that sustainably generates returns in excess of our cost of capital, and is able to weather and adapt to any economic environment in which we find ourselves. We remain committed to being the airline that customers want to fly, co-workers want to work for and investors want to invest in. During the quarter, we successfully completed the most complex milestone of our integration, the conversion to a single passenger service system, a single loyalty program and a single website, the largest technology conversion in aviation history. I cannot overstate the importance of this conversion and the value that will be created now that it is complete. With this conversion behind us, we now market under a single code, and we can flow our aircraft freely across the network, matching the right aircraft to the right route, which will enable us to deliver on the significant revenue synergies we anticipated from the merger. We will be making many network changes in the coming months, and Jim will speak about that in a few minutes. While the conversion to Shares, our single passenger service system was successful, and we've had solid operational performance afterwards, we had a number of issues which affected some of our customers as one would expect after a massive technology and process change like this. We also aligned many policies and procedures between the carriers and made a number of simultaneous changes to our loyalty program. Moreover, although our new website is materially more advanced than our old one, there are gaps between the functionality of our old website and our new website that we will close over time. These issues initially drove high call volumes, increasing the average wait times for our agents to answer customer calls. As we explained last quarter, we spent significant resources to train our reservation and customer care co-workers on the new system and policy and procedure changes, and we increased staffing levels to support the conversion. Even with the team's preparation, the average wait and handle times at our customer contact centers increased substantially. As a result, in the weeks following the system's conversion, we weren't able to deliver the level of customer service that we wanted and that our customers have come to expect, and I apologize to our customers who were affected during this time. As we identify the issues that were driving high call volumes, we remediated the vast majority of them, and our average speed of answer has fallen substantially, as have our average handle times. As our agents gain experience in the Shares system, we expect handle times to continue to fall and return to normal levels. Despite the complexity of the conversion and the subsequent issues we had, we should not lose sight of the fact that we have safely carried 22 million passengers since the conversion occurred on March 3, and our operating performance, including on-time and completion factor, has been consistent with our performance prior to the conversion. This is a testament to the dedication and commitment of my co-workers. One silver lining to the stress of our systems conversion is that we discovered some deficiencies in how our subsidiary carriers were dealing with customer service issues before the conversion. As a result, we'll be making changes to items like customer messaging and information flow that will permit us to provide better customer service than we had prior to the systems conversion. I'd like to take a moment to recognize all of my co-workers, especially our reservations, customer care and airport co-workers, who worked very hard under stressful conditions, including high load factors due to spring break, to assist our customers after our systems conversion, and our technology team, who worked tirelessly to address issues we encountered and fix them quickly. This was a monumental task for the company, and I'm proud of the way our team performed and worked together. We will continue to invest in our technology and will deploy a new front-end to the Shares system by the end of this year for our airport and contact center agents that will allow my co-workers to serve our customers better and faster than they've ever done before. The Shares platform is stable, dependable and advanced, due to our ongoing investment in its operating system, hardware and system architecture. Its design give us flexibility and can be integrated with current generation technologies. These characteristics will allow us to operate more efficiently and will significantly increase our speed to market for new products and services. We're already seeing the benefits of moving to Shares. We've seen web sales penetration improve since moving to the single website, powered by Shares, and are experiencing record sales of ancillary products and services on our website. Our new website not only helps improve our ancillary revenue results, but it also improves our direct relationship with our customers. Our off-airport check-in percentage has increased nearly 5 points to almost 50% of all check-ins since moving to Shares. Further confirmation that if we give customers the right tools, they will use them. We plan to continue rolling out new technology to make the travel experience easier for our customers, and to give our customers more information, more choice and more control over their travel experience. As I just mentioned, a significant benefit of moving to Shares is our improved ability to generate substantial incremental ancillary revenue. We will use the flexibility of the new platform to deliver new pricing structures and bundling opportunities for existing products. Shares also will facilitate the faster introduction of new innovative products, which will result in a better portfolio of offerings that our customers desire, as well as new revenue streams for the company. Since the launch of the single website, we have already taken the first of several planned steps to more effectively revenue manage Economy Plus upsell. Prior to our conversion, we were limited to a single price point for every Economy Plus seat on a given flight. Since converting to Shares, we now have the ability to vary pricing, based on a number of factors, including row type, seat type, days from departure and more. Due to this new functionality, we've been able to increase the average price of an Economy Plus seat in March by 9% year-over-year. And when combined with the increasing number of Economy Plus seats available, total Economy Plus sales in March increased 37%. Now that we have a single loyalty program, Mileage Plus, we're able to begin unlocking the significant value creation potential that exists with operating the world's largest loyalty program. The large membership base, a highly recognized and coveted mileage currency, the leading portfolio of co-brand credit cards and a strong network of loyalty business partners, provide the platform upon which we will innovate and drive incremental margin moving forward. We designed a frequent flier benefit structure of the integrated loyalty program to better recognize and reward value-creating behaviors of our customers and to better stratify membership tiers so that benefits logically and progressively improve as higher status tiers are reached. We launched Premium MileagePlus club card in March, building on the strong performance we're seeing for the MileagePlus Explorer card that we launched last July. We're excited about the opportunities we see in our loyalty business. These include new ways to engage with membership, strengthening and expanding the network of business partners that participate in the MileagePlus loyalty network and increasing the utility of the currency through innovative earning and redemption opportunities such as our recently launched partnership with Gilt, Exclusive Resorts and Topguest, as well as the launch of our new auctions program, MileagePlus Headliners, and the Gift Card Exchange. We believe the loyalty space has significant high margin opportunity in the coming years, and we plan to capitalize on it. We took a number of actions to ease the stress at our airports during the Shares conversion, such as pulling down the flight schedule, limiting our overbooking levels and waiving certain fees in the days following the conversion. While beneficial to the operations, these actions adversely impacted our revenue results this quarter. Over the longer-term, however, we believe that our investments in integration and new products and services will continue to drive a revenue premium to the industry. Economy Plus seating, which offers up to 5 extra inches of leg room versus standard Economy seating, is now on 75% of our combined mainline fleet, and we expect to have all mainline aircraft reconfigured by the end of the year. Our lie-flat premium seat installation on our international widebody fleet is nearly complete, with the remaining aircraft to be completely retrofitted by this time next year. We'll begin installing our satellite-based global Wi-Fi network at the end of the year, which when completed, will cover our entire mainline fleet. We also continue to invest in customer pleasing and fuel-efficient aircraft. We expect to induct 5 Boeing 787 Dreamliners into service this year and we recently completed a EETC transaction that financed 4 Dreamliners and 14 737-900ER aircraft and refinanced 3 additional 737-900ERs, with the lowest blended coupon rate ever for a EETC transaction. The Dreamliner is a spectacular aircraft and a game changer for United. And we can't wait for our customers and co-workers to experience it. We'll be the first North American carrier to take delivery of this revolutionary airplane. During the quarter, we also made progress bringing together our employee groups. We achieved a tentative agreement with our subsidiary United flight attendants, which was recently ratified. We now turn our attention to joint negotiations to bring all of our flight attendants under a single collective bargaining agreement. Our passenger service employees completed their representation election. We've begun joint negotiations with them. All representation issues have now been concluded with our major domestic unions, and we're in joint collective bargaining with the unions of all of our major work groups. We remain focused on bringing our work groups together as promptly as we can with responsible joint collective bargaining agreements that pay competitively, which will be fair to our co-workers and fair to the company. While this quarter was challenging for us, we remain committed to taking the actions necessary to achieve sustained and sufficient profitability. Now that we are one airline with a single code, a single passenger service system, a single loyalty program, a single website and single policies and procedures, we are on the steep back slope of our integration. This permits us to shift our focus to expanding the products and services that customers want and are willing to pay for, and delivering on our commitment to customer service. With that, I'll turn it over to Jim and John to go through the results in greater detail.