Have a nice flight.

祝您一路顺风。

Alright. Please sit down.

好的，请坐下。

How fast can my mail be received?

我的信件多快会被收到？

Have you anything dutiable?

您有应缴税的东西吗？

OK. But don't delay too long. Or that trip will be all booked.

好，但不要拖太久，否则会订满的。

Do you accept credit cards?

你们接受信用卡吗？