根据对话内容，用恰当的单词、短语或句子，补全对话 ,使对话完整通顺。(本题共5小题，每题2分,共计10分）
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. Here you are. Goodbye, sir.
B. 5.