You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I be of your service?

USER: I need to book a flight from AUS to CLT, so aid me in booking a flight in a best flight.

ASSISTANT: Sure, I'll help you in booking. Please let me know if you need a connecting flight in between your journey routes.

USER: Yes, I need it.

ASSISTANT: Kindly share your budget limit.

USER: My budget is 500.

ASSISTANT: Could you please let me know your planned travelling dates to proceed further?

USER: My planned dates are 05/05 to 05/07.

ASSISTANT: Thank you for sharing your journey details, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a Southwest airline matching your essential details with single connection and the fare 100.

USER: Ok, please proceed.

ASSISTANT: Your ticket has been confirmed with the flight number-1000.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: My name is Frank Smith.

ASSISTANT: Thank you for approaching us.