A: Are you being served, sir? What can I get for you?
B: Well, I'd like a size 18 sweater in grey.
A: Oh, certainly, we have a wide range of fashionable sweaters. How about this one? Only $17.
B: Yes, but I'm afraid the colour is too dull. Haven't you anything smarter?
A: Hmm... I see. Maybe this one? It really looks great!
B: May I try it on?
A: Certainly. This way, please. Oh, sir, this is just the thing for you!
B: Yes, it looks all right. What about the price?
A: 29.90. Not cheap, of course, but it's worth the money.
B: Well, I think I'll take it.
A: Thank you, sir. You've made a real bargain, I assure you. The cash desk is straight ahead.