Dona: May I help you?
Basil: Yes, I'd like to book 3 seats to Calgary, Canada on a flight, leaving sometime before next Sunday.
Dona: Economy class?
Basil: Yes.
Dona: One way or round trip?
Basil: One way.
Dona: There aren't any direct flight, sir. You will have to change in Vancouver.
Basil: That's alright.
Dona: There is a Canadian Airlines flight 30 leaving Beijing next Friday at 10 o'clock am. It has 3 seats available. Will that be alright?
Basil: That's fine.
Dona: Your name, please.
Basil: BASIL, Basil. How much is the ticket?
Dona: $580 for one.
Dona helps Basil book three seats of economy class to Calgary, Canada on a flight next Sunday.