You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Can you help me to book a flight ticket from AUS to IAH?

ASSISTANT: Sure, can you share your trip dates?

USER: My trip dates are Sept 03 and Sept 05.

ASSISTANT: Do you have any connection limit?

USER: I prefer connecting flight.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: Are there any other specifications?

USER: I would like to return back in the afternoon time.

ASSISTANT: Please forward your name.

USER: I am Anthony Evans.

ASSISTANT: There are no flights found on your specified trip dates.

USER: No problem, thank you for the information.

ASSISTANT: Thank you.