The ticket window
售票窗口

Excuse me, where is the ticket window?
请问，哪里是售票厅啊？
Walk straight and you will see it.
一直往前走你就会看到的。

I would like to buy round ticket to London please.
我想买张去伦敦的往返票。
The next one?
下一班的吗？
Yes. How long is the round ticket good for?
是的，返程票多少天内有效?