You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, may I know how best I can help you today?

USER: Myself Debra Martin. I am looking for a flight from DCA to ORD, can you help me in booking the flight ticket?

ASSISTANT: May I know on what dates would you like to travel?

USER: Sure, my travel dates are 02/10 and 02/12.

ASSISTANT: There is a flight with 1021 flight number with the fare 200, shall I proceed?

USER: Please proceed booking with that flight.

ASSISTANT: Ok, your booking is done.

USER: Thank you for your expeditious service.

ASSISTANT: Have a safe journey.