根据上下文补全对话。每空一词。

A: Can I you?

B: , please. I need a sweater.

A: OK. What do you want?

B: Blue.

A: How this one?

B: It looks nice. How much ?

A: Nine dollars.

B: I'll it. How much the socks?

A: Two dollars one pair.

B: OK. Give me two pairs.

A: Here you

B: Thank you.