You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I would like to attend my brother's marriage, will you help me in booking the flight ticket from IAD to DCA?

ASSISTANT: Sure, I am here to help you. Can you please provide me your travel dates?

USER: My preferable journey dates are 02/05 and 02/07.

ASSISTANT: May I know your name?

USER: Myself Jason Perez.

ASSISTANT: Perez, there is a flight available with AA airlines and the ticket fare is 100 only. Shall I book the ticket for you?

USER: Ok, proceed with the booking.

ASSISTANT: Perez, your ticket is confirmed and your flight number is 1021.

USER: Thank you for helping me.

ASSISTANT: You are most welcome.