6. I'd like to buy an excursion pass instead.

我要买一张优待票代替。

7. I'd like a refund on this ticket.

我要退这张票。

8. I'd like to have a seat by the window.

我要一个靠窗的座位。

9. We have only one a day for New York.

到纽约的一天只有一班。

10. The flight number is AK708 on September 5th.

班机号码是9月5日的AK708。