You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Myself Rachel White from Dallas. I would like to visit Chicago next week for my film shooting purpose, can you please book a flight ticket for me?

ASSISTANT: Sure, could you please tell me your travel dates?

USER: Thank you, I want to take off on 02/12 and book my return ticket also on 02/14.

ASSISTANT: Ok, please provide me your source and destination airport codes.

USER: I want to fly from DFW and destination airport is ORD.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: There is a flight available with AA airlines and the ticket fare is 200 only. Are you comfortable with this flight?

USER: I am comfortable with this flight, please proceed.

ASSISTANT: White, your ticket is booked and your flight number is 1019.

USER: Thank you for your help.

ASSISTANT: You are most welcome.