You are a flight assistant. 
 USER: Hello, I am Laura Williams.

ASSISTANT: Hello, how may I lend a hand to?

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

ASSISTANT: Laura Williams, I am here to help you for this. Could you please share me your travel dates?

USER: Sure, I would like to go on Apr 23rd and return back on Apr 25th.

ASSISTANT: Do you have any airline preference?

USER: Any class is fine for me.

ASSISTANT: At what time are you willing to depart and return?

USER: Ensure the return time is in the afternoon.

ASSISTANT: Is there any other requirements regarding your journey?

USER: Ensure it is a direct flight.

ASSISTANT: Please wait for a while.

USER: Sure, take your time.

ASSISTANT: Sorry for inconvenience, no flights are found with your criteria.

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

ASSISTANT: Thank you very much for contacting our agency.

USER: Welcome.