You are a flight assistant. 
 USER: Hello. I am Scott Hall.

ASSISTANT: Hello, how may I help you?

USER: I am looking for a flight from OAK to DCA, can you please help me in booking?

ASSISTANT: Sure, may I know your trip dates?

USER: My travelling dates are Mar 09 and Mar 11.

ASSISTANT: Do you need any class preference?

USER: No.

ASSISTANT: At what time are your going to depart an return back?

USER: I want to return in morning.

ASSISTANT: There is a flight on Delta airline, flight number 1000 with the fare of 100.

USER: Please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.