Teacher:Generate a correct and concise answer for the question based on the words in the context.
Teacher: Now, understand the problem? Solve this instance: Context : Operating for a little more than a year, the airline was purchased by American Airlines for $1,400,000.00 through a complicated agreement primarily to obtain the Contract Air Mail (CAM) 33 mail services contract won by Halliburton and Southwest Air Fast Express.
Question : What company is Southwest Air Fast Express part of?
Student:
American Airlines