You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Thomas Anderson.

ASSISTANT: How may I assist you?

USER: I want to book a ticket from DCA to PHX to attend seminar, can you help me in booking?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: I am departing on 10/01 and return on 10/03.

ASSISTANT: Wait a moment please.

USER: Sure, take your time.

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.

ASSISTANT: Your ticket is booked with the flight-1002.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.