Thanks, Nene and Sarah, and thank you all for joining us on our second quarter 2012 earnings call. Today, we reported net income of $545 million for the second quarter or $1.41 per diluted share, delivering a pre-tax margin of 5.5%. Based on our year-to-date profit, we've accrued $54 million in profit-sharing for our coworkers so far this year. This is our first full quarter operating as a single airline, following our conversion to a single passenger service system. Now, all of our customers can purchase tickets through a single website, united.com, experience a single check-in process through our mobile app, website or at the airport, and earn miles in a single loyalty program, MileagePlus. The shares conversion was successful, but following the cutover, we faced a number of issues. As we identify these conversion-related issue, our top priority was to improve the customer and coworker experience by determining the cause and quickly deploying teams to fix the problem. We made significant progress on these issues during the second quarter, and customers calling our reservations line now experience normal wait and handle times, MileagePlus miles for United flights now post within 48 hours of travel, and complementary upgrades for our premier members now clear in a timely manner. I'd like to thank my coworkers for working together to promptly resolve the conversion-related issues and for their commitment to taking care of customers during a challenging time. Although working with a new system and implementing new processes are not easy, we're excited to begin using the share system because of the power and flexibility it provides. We plan a number of improvements, including an enhanced front-end interface for our airport and contact center agents. This new tool will make fulfilling customer requests and making changes easier and faster for our coworkers. We rolled out a test of the first of several planed releases for our airport agent interface 2 weeks ago, improving the speed and ease of handling premium cabin up-sells, same-day upgrades and standby requests. Our next major release occurs in October, which includes a new user-friendly design and experience, easier elite recognition, automatic calculation of service charges and better flight amenity details. In 2013, we will implement a comprehensive new front-end interface for our airport and reservations agents, which will enable us to deliver a higher level of service than we've ever been able to offer in the past. Although our financial results this quarter are solid, our operational performance didn't meet our goal of providing the reliability that our customers expect. During the quarter, our performance declined on metrics such as on-time arrival, mishandled bag rates and cancellations. We recognize that we added new stress to the system by simultaneously converting to a single passenger service system, implementing hundreds of new processes and procedures, rerouting aircraft across our network and harmonizing our maintenance programs. Those changes were in large part responsible for the degradation in our operational performance. Pete MacDonald, our Chief Operations Officer, is leading an aggressive effort to address these issues. In mid-May, we launched our first wave of domestic aircraft redeployment, and we're pleased with the early results on these routes. However, our redeployment strategy brings some complexity to our operations for a period of time, since redeploying aircraft introduces a new aircraft type to a new market or hub. For instance, using Airbus aircraft in Houston or Boeing 737s in Chicago. Additionally, that complexity is amplified during irregular operations caused by weather or mechanical issues, and during peak travel times like the summer. To help our airports and manned maintenance stations during this period of change, we're increasing staffing levels to the remainder of the year. At our United subsidiary, we had reduced the number of spare aircraft in the system, as we introduced more preventative maintenance visits and aligned the maintenance programs of our 2 subsidiary fleets. We are, however, reversing our spare reduction decision based on the recent increase in long flight delays and cancellations on our United subsidiary fleet. We are returning to our historical level of spares at our United subsidiary, and are increasing our line maintenance touch points and hours, which we expect will quickly improve our schedule reliability. Once we are past this period of change, we believe that we'll be able to return to a more efficient spares complement. Although we faced challenges this quarter, we laid the groundwork for United's future. I know we caused some customer disservice because of all the changes we've made so quickly, and I apologize for that. We hold ourselves to a higher customer service and reliability standard than we've delivered for our customers lately, and we will return to the level of service and reliability our customers expect. Looking beyond that, we're investing across the enterprise to improve the product and services we offer our customers. This will help us reach our goal of achieving sufficient and sustained profitability and generating returns in excess of our cost of capital across the business cycle. We continue investing in products that our customers value and are willing to pay for, and are aligning our onboard offerings across subsidiaries and fleet types. To date, we've installed Economy Plus seating on 86% of our mainline fleet and plan to finish outfitting our entire mainline fleet with Economy Plus by January 2013. Our Premium Cabin flat-bed seats are now installed on 87% of our international fleet, including our first reconfigured and retrofitted International 767-300ER. We'll complete installation of flat-bed seats on our entire international fleet by the end of the first quarter of 2013. We improved our premium international in-flight dining experience with enhanced gourmet meals and course-by-course meal service in Global First and BusinessFirst. We began installing global satellite-based Wi-Fi in August, introducing the product first on Airbus A319 aircraft, followed by the Boeing 747 and 737-900ERs. Given the size of our fleet, the installation process across our entire mainline fleet will take about 3 years. United is committed to investing in a modern, customer-pleasing and fuel-efficient fleet. And 2 weeks ago, we announced a new narrow-body aircraft order for 100 Boeing 737 MAX 9 aircraft and 50 Boeing 737-900ER aircraft. These planes offer a significant improvement in customer experience, fuel efficiency, environmental responsibility and operating cost compared to the aircraft they're replacing. We are replacing our older, less fuel-efficient aircraft types, such as the Boeing 757-200s, which currently fly domestically. Together with our existing orders, our new narrow-body order ensures that in the coming years, United will have a highly efficient and flexible fleet that offers customers the amenities they want. We expect to take delivery of our first Boeing 787 Dreamliner in September, flying first between our U.S. hubs before moving to international service. The 787 is a game-changer, with unparalleled fuel efficiency and customer-pleasing amenities, such as large windows and a modern cabin design to reduce the effects of jet lag. It gives us the opportunity to operate more efficiently while offering our customers the best airplane in the skies, and is a powerful competitive advantage as we will be the first North American airline to fly the Dreamliner. We're improving our global network by introducing new service. During the second quarter, we launched new service route from New York to Buenos Aires, from San Francisco to Washington Reagan National, and from Washington Dulles to Manchester and Dublin. We're also investing in our hub airports. At O'Hare's Terminal 2, we're building a new United Club which will triple the size of our existing club and will feature a modern look and feel and we're installing an additional 10 jet bridges at our United Express gates, enhancing our customers' experience while on the ground in Chicago. We continue to innovate our industry-leading Loyalty Program MileagePlus with 90 million members worldwide. We recognize the significant opportunity to create value by building the strongest loyalty currency possible. In addition to offering unmatched opportunities to earn miles, we're committed to offering excellent air and non-air redemption opportunities. United recently earned recognition as the carrier with the most award seat availability among U.S. global airlines. We know how important it is to our members to receive award travel, and we're proud to be the best in the industry. In March, we introduced the United Club card, the latest product in the United MileagePlus Chase Visa portfolio. The United Club card is a premium card offering holders a number of options to access United Club lounges across our industry-leading global network, Premier Access, our priority airport experience, a mileage bonus when using the card, and complementary first and second checked bags. Interest in the new United Club Card is very strong, and we're looking forward to growing our card portfolio and other loyalty opportunities in the coming quarters. We're also investing in our coworkers by getting them the right tools to do their jobs safely and efficiently, and by recognizing them for their great work. In addition to the upcoming user-interface improvements to shares, in May, we open a new Network Operations Center, or NOC, in downtown Chicago. The NOC is the nerve center for our airline, where we do aircraft routing, load planning, crew scheduling and weather forecasting. United's NOC is a world-class operations center, with the best technology and tools for our coworkers, who manage our round-the-clock global operation. We're also improving coworkers' access to health and wellness professionals by building an employee medical clinic at O'Hare. During the second quarter, we introduced our Outperform Recognition Program. The program gives customers the opportunity to recognize an employee for providing outstanding service using our mobile app. Coworkers who are nominated by customers are entered into a drawing to win cash prizes, including a top prize of $50,000. Any MileagePlus member submitting a nomination is also entered into a drawing for prizes such as MileagePlus miles and round-trip tickets on United. We continue making progress in bringing our employee groups together. In June, we reached a tentative agreement with our flight attendants from our Continental subsidiary, and that agreement was ratified 2 weeks ago, 3 months ahead of the contract's amendable date. In addition, last week, we reached a tentative agreement with our Continental Micronesia flight attendants. In the last 9 months, we've achieved ratified agreements with 5 of our work groups, including United and Continental flight attendants, United and Continental Micronesia Mechanics and Continental Ground School Instructors. We continue to make progress in mediated joint negotiations with ALPA, our pilots union. At the request of the National Mediation Board, we won't be giving further details on the status of our pilot negotiations at this time. However, we remain focused on bringing our work groups together as quickly as we can, with responsible joint collective bargaining agreements that pay competitively. We're pleased with the progress we've made this quarter, but our operational performance and financial results are not yet where we want them to be. We will work hard to improve our results, and I'm excited by what we'll deliver for our customers and our coworkers as we work together to build the world's leading airline. With that, I'll turn it over to Jim and John to go through the results in greater detail.