How to book tickets online?

如何在网上订票？

You can book tickets on line.

你可以在线订票。

Maybe we can book tickets online.

也许我们可以在线订票。

How do I book tickets?

怎么订票呢？

Ok give me a call so I can book tickets.

好，那随时给我电话，我可以帮你订票。