I booked a single room.

我预订了一间单人间。

You can choose a single room or a double room.

你可以选择单人房或双人房。

I would like to book a single room.

我想预订一个单间。

His budget only allows for a single room.

他的预算只够住单人房。

The price of a single room is cheaper than a double room.

单人房的价格比双人房便宜。

I prefer staying in a single room because it is quieter.

我喜欢住在单人间，因为比较安静。

Yes, I'd like to book a single room for two nights.

是的，我想订一间单人房，住两个晚上。

I need to buy a single room.

我需要买一个一居室的房子。

Guest: A single room, please. How much is the room?

客人：请给我一间单人房。房间多少钱？

Yes, a single room for October 15.

是的，十月十五日一个单人间。