You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Edward Thomas.

ASSISTANT: How may I assist you?

USER: I am planning to visit Washington, will you help me in booking the flight ticket from SEA to DCA?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: My travelling dates are 03/21 and 03/23.

ASSISTANT: Please hold on a moment.

USER: Ok, I will wait for your response.

ASSISTANT: I found a flight for you in Delta airlines with fare 100. Can I book your ticket?

USER: Sure, you can proceed with the booking.

ASSISTANT: Ok, your booking is confirmed with flight number 1029.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing us.