A: Good morning.
B: Good morning. Can I help you?
A: I'd like to buy a coat. Which colours do you have?
B: Green, blue, black and red.
A: Can I try on a black size thirty six?
B: Of course. Please.
A: How much is it?
B: That's fourty five pounds. Here you are.
A: Thank you. Good bye.
B: Good bye.