American Airlines says it will buy Capital One competitor, American Airlines

American Airlines is buying Capital One customer service and taxi service provider Capital One, its second acquisition in as many months.

Capital One said in a regulatory filing Wednesday that it has acquired American Airlines customer service company Capital One.

The transaction is expected to close in the fourth quarter of this year.

Capital, a San Francisco-based customer service provider, will continue to be a subsidiary of American Airlines.

Capital will continue as an affiliate of American’s regional partner, Capital One said.

The company’s current portfolio includes United Airlines, Continental Airlines and Virgin America.