American Airlines gave away 20,000 tickets to fans who attended the Dallas Mavericks’ last game of the season last night (it’s actually 19,000 people at the game and 1,000 in a related promotion). Pretty cool — fans didn’t learn about the free tickets until they arrived at the game. There is one catch, though: the tickets are only good for nonstop flights from Dallas-Love Field. Don’t book that hotel in Hawaii just yet. The tickets are good through November from Love to Austin, San Antonio, Kansas City and St. Louis.