American Airlines is ditching its first class seat offering on long-haul flights because customers have stopped booking seats in the premium cabin.

American Airlines expanded on its plan to drop first-class seats on its international flights and replace them with more business class seats.

Some of the new seats on long-haul international flights will be dubbed “Flagship Suites” and feature seats that convert into beds and doors for privacy.

"First class will not exist on the 777, or for that matter at American Airlines, for the simple reason that our customers aren't buying it," American Airlines's chief commercial officer Vasu Raja said during an investor call Thursday.

“The quality of the business class seat has improved so much. And frankly, by removing [first class] we can go provide more business class seats, which is what our customers most want or are most willing to pay for,” Raja said.

Most planes used on domestic routes, including virtually all single-aisle jets, will continue to have the standard first class seats at the front of the planes. Although they also have more leg room and might recline more than economy seats, they don’t lay flat.

In September, American unveiled its new 'Flagship Suite' business class, as part of plans to increase the number of premium seats available on its long-haul flights by 45%, by 2026,

Rivals United and Delta airlines dropped the first class designation on their international flights years ago, going with more luxurious business class offerings. Delta made the change in 1998, United did so in 2016.