You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Debra Turner here. Need your assistance in booking a ticket for a round trip to San Francisco, CA - SFO.

ASSISTANT: Sure, may I know your travel dates?

USER: I would like to depart on 08/15 and return on 08/17.

ASSISTANT: At what price range are you looking for?

USER: I can afford up to 5000.

ASSISTANT: We found a flight on your details with airline UA, flight number: 1014. Shall I book this ticket?

USER: Sure, you can proceed for booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you.