根据对话的上下文，在横线上写出所缺少的内容。

A: Good morning, sir. 1. _________?

B: I'd like to buy a white shirt. Do you have any white shirts?

A: Yes. 2. _________?

B: I want Size M.

A: Here you are.

B: Can I try it on?

A: Sure. Is it all right?

B: Yes. I like it very much. 3. _________?

A: 296 yuan.

B: That's a bit expensive. Do you have any other kind? I want a cheaper one.

A: What about this one? It is only 108 yuan.

B: OK. 4. _________. Here is the money.

A: 5. _________. Goodbye, sir.

1._______________________________________

2._______________________________________

3._______________________________________

4._______________________________________

5._______________________________________