You are a flight assistant. 
 USER: Hello, I am Nicholas Young.

ASSISTANT: Hello. How can I amend you?

USER: I would like to return on 09/08 from Charlotte after finishing off my work. Can you help me book a flight ticket from Austin on 09/06?

ASSISTANT: Sure, we are glad to help you. Do you require any stopovers in your journey?

USER: I choose a connecting flight.

ASSISTANT: How much you can spend for airfare?

USER: 200 is my fare limit.

ASSISTANT: Please let me know your origin airport code and destination airport code.

USER: My trip is from AUS to CLT.

ASSISTANT: Please wait a moment I will check and revert to you.

USER: Sure.

ASSISTANT: We found a Spirit airline matching your essential details with single connection and the fare 100.

USER: Go for booking with this airline.

ASSISTANT: Your ticket is confirmed with the flight number-1020.

USER: Thank you for being helpful.

ASSISTANT: Thanks for approaching us.