Have a nice flight.

祝您一路顺风。

Can you give me some forms of identification?

你能给我什么证明身份的文件吗？

How many days will it take for my mail to reach its destination?

我的信件到达目的地要用几天？

No. I really don't know how to go about it.

没有。我真不知道如何填。

May I have a bus map, please?

请给我一份公共汽车路线图好吗？

Is this my meal?

这是我的菜吗？