You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Nancy Harris from Phoenix.

ASSISTANT: How may I help you today?

USER: I want to go to Chicago next week. Can you please book a flight ticket for me?

ASSISTANT: Sure, I'm glad to help you with that. May I know your source and destination airport codes please?

USER: Thank you for your positive response, I want to fly from PHX and destination airport is ORD.

ASSISTANT: Ok, on which dates are you planning to do journey?

USER: I want to take off on 01/27 and please confirm my return ticket also on 01/29.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: UA airlines is having a flight on that route with travel charge of 200, shall I proceed for booking?

USER: That's perfect, please book this flight ticket for me.

ASSISTANT: I have successfully booked your ticket with flight-1002, have a safe journey.

USER: Thank you for your help in flight ticket booking process.

ASSISTANT: You are welcome, thank you for choosing us.