You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Myself Elizabeth Smith, I need to schedule my trip to Austin for next week. Could you please help me in booking the ticket?

ASSISTANT: Sure, help me with your preferable journey dates?

USER: I am willing to travel on 01/15 and again I will be return back on 01/17.

ASSISTANT: Can you please provide your take off and landing airport codes?

USER: My source airport code is IAH and my destination airport code is AUS.

ASSISTANT: Do you prefer any halt in between your journey?

USER: Can you please check for me a direct flight?

ASSISTANT: OK, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting. We found there is no direct flight available with your dates.

USER: Not a big problem. Anyhow thank you very much for your information.

ASSISTANT: Thank you for reaching us, have a good day.