Can I help you?
n Yes, how much is a city map?
n $4.50.
n Okay, a city map, please.
n Anything else?
n Yes. How much is a coke?
n 75 cents.
n And a bottle of water?
n The same, 75 cents.
n Okay, I'd like a coke, please.
n Here you are. Anything else?
n No, that's all.
n $5.25, please.
n Here's $10.00.
n Your change is $4.75.