(SA = Shop assistant; R = Russell)
SA: Can I help you?
R: Oh, I'm just looking, thanks. Well, actually, I'm looking for something for my girlfriend.
SA: And what sort of thing are you looking for?
R: I don't really know. A top?
SA: Right. What colour would you like?
R: Um, what colours have you got?
SA: We've got any colour you want, sir. What colour does your girlfriend usually wear?
R: Oh dear ...
SA: Okay, what colour are her eyes?
R: Green.
SA: Right, purple suits people with green eyes.
R: Oh great. Yes, purple's fine.
SA: Now, what size is she?
R: Um, well, sort of, she isn't very big, but she's not particularly small.
SA: That'll be medium then.
R: Yes, good, medium.
SA: Well, we have this rather nice silk evening top here ...
R: Good, I'll take it.
SA: Are you sure you don't want to see any more ...?
R: No, that's great. I'll take it. Thank you. How much is it?
SA: That's £70, sir. How would you like to pay?
R: Seventy?! By credit card, please.
SA: Fine. If you could just sign ...
R: Here you are. Goodbye.
SA: Just a minute, sir. Here's your receipt.
R: Oh yes, er ... can she exchange it if it doesn't fit?
SA: Yes, but she needs to keep the receipt.