American operates out of ten hubs located in Dallas/Fort Worth, Charlotte, Chicago–O'Hare, Philadelphia, Miami, Phoenix–Sky Harbor, Washington–National, Los Angeles, New York–JFK, and New York–LaGuardia. American operates its primary maintenance base at Tulsa International Airport in addition to the maintenance locations located at its hubs. Dallas/Fort Worth International Airport is American Airlines’ largest passenger carrying hub, handling 51.1 million passengers annually with an average of 140,000 passengers daily. As of 2017, the company employs over 122,000 people. Through the airline's parent company, American Airlines Group, it is publicly traded under NASDAQ: AAL with a market capitalization of about $25 billion as of 2017, and included in the S&P 500 index.
Airbnb, Inc. is a privately held global company headquartered in San Francisco that operates an online marketplace and hospitality service which is accessible via its websites and mobile apps. Members can use the service to arrange or offer lodging, primarily homestays, or tourism experiences. The company does not own any of the real estate listings, nor does it host events; as a broker, it receives commissions from every booking.