You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you now?

USER: Can you aid me in booking a flight ticket from AUS to ATL?

ASSISTANT: Sure, I am happy to help you now. May I know your dates of journey, please?

USER: Sure, I would like to go on Dec 05th and return back on Dec 07th.

ASSISTANT: Do you have any limit on maximum number of connections?

USER: Ensure it is a direct flight.

ASSISTANT: May I know your class preference for your journey?

USER: Any class is fine for me.

ASSISTANT: Let me know your departure and arrival timings.

USER: I don't have any specific timings.

ASSISTANT: Can I know your airline preference for your flight ticket?

USER: Any airline is fine for me.

ASSISTANT: Please, forward me your name to proceed further for documentation purpose.

USER: Myself Linda Green.

ASSISTANT: Sorry to say that, there are no flights available as per your specifications on your routes.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for choosing us.