Tom: There is a snack bar down there. I am hungry.
Waitress: Can I help you?
Tom: Yes, please. I want some fries, a hamburger and an ice-cream. What would you like to eat?
Sally: I'd like fruit salad with lots of mushroom and cucumber, and a hamburger, please.
Tom: How much are they?
Waitress: They are twenty yuan.
Tom: Here you are.
Waitress: Thank you.