A: Can I have a look at that jacket, please?
B: What size do you wear?
A: Extra large.
B: Here you are.
A: Can I try it on?
B: Sure. Go ahead.
A: May I help you?
B: Yes, please. I'm looking for a necktie.
A: Any special brand?
B: No. Just something simple and not too expensive.
A: How about this one?
B: That's fine. How much is it?
A: It's only US$10 and it's on sale.
B: OK. I'll take it. Thanks.