They can co-ordinate fares, sales forces, flights chedules and frequent-flyer programmes—efficiencies that are, they claim, in the interests of customers.

通过合并，他们可以协调票价，销售力量，航班时刻表，以及他们所称让利于顾客的常客项目。

youdao

He popularised frequent-flyer programmes, computer-reservation systems and the yield-management systems that tell airlines how much to charge for particular seats.

ECONOMIST: American Airlines loses its pilot