A: Good morning. Are you being served?
B: No. I'd like a pair of shoes.
A: What size do you take, sir?
B: Size seven.
A: Try this one, please. How is it? Does it pinch anywhere?
B: No, it doesn't pinch. It seems to be a perfect fit. But I don't like the color. Do you have black ones?
A: Yes, Wait a minute, please. I'll get them for you.
B: Yes ,they are what I want. How much are they?
A: Twenty dollars.
B: That's rather expensive, isn't it?
A: No, sir. It's not expensive.
B: All right. I'll take it.
A: Thank you. Will you pay at the desk, please? Anything else?
B: No, thanks.