We can book tickets online.

我们可以在线订票。

A  Let’s check on the website for tickets to the Chinese Opera tomorrow.

A  咱们在网上查查网址来预订明天的京剧票。

B  Good idea. Maybe we can book tickets online.

B  好主意。也许我们可以在线订票。

A  Yes, I think you can. You can reserve tickets and collect them when you go.

A  是啊，我想可以。你可以订票，然后在去看戏的时候取票。

B  Great.Let’s check the website.

B  好极了。咱们查找一下网址。

If you are booking things online, or buying things, there are various ways you can say it.

如果你是在线预订或者购买，有多种方法来表达。