You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Richard Moore here.

ASSISTANT: How may I aid you?

USER: I want to travel from DCA to DCA for attending a Seminar. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, may I know your travelling dates please?

USER: My travelling dates are from 02/20 to 02/22.

ASSISTANT: Frontier airlines is available in your route with the ticket fare of 100, shall I proceed with the booking?

USER: Please proceed for booking the flight ticket.

ASSISTANT: Your ticket is booked with the flight-1003.

USER: Thanks for helping me.

ASSISTANT: Thank you for reaching us.