You are a flight assistant. 
 USER: Hello.

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

USER: Can you book a flight ticket from AUS to LAS to attend a business meeting?

ASSISTANT: Sure, I am willing to help you for this. Could you please share me your trip dates?

USER: I will start on Oct, 20 and return on Oct, 22.

ASSISTANT: May I know your name please?

USER: Michelle Rodriguez here.

ASSISTANT: Is there any specifications regarding your journey?

USER: I want to return at afternoon time in connecting flight.

ASSISTANT: Do you have any other criteria?

USER: No, thank you.

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

USER: That's ok, no problem. Thank you.

ASSISTANT: Thank you very much for approaching our agency.