You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I would like to fly to Austin to visit Texas State Capitol, can you please help me in booking?

ASSISTANT: Sure, I am here to help you with that. Can you please share your travel dates?

USER:  I want to reach AZ on Oct 13th and I'll return within two days that is on Oct 15th.

ASSISTANT: May I know your source and destination codes?

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

ASSISTANT: Do you prefer a connecting flight or direct flight?

USER: Yes, I want to fly with with the connecting flight for this time.

ASSISTANT: Do you have any other specifications?

USER: I need to return from Austin in the afternoon.

ASSISTANT: Sorry  for the inconvenience, there is no flight found on this route as per your travel dates.

USER: That's fine, I'll choose any alternative to reach my destination. Thank you.

ASSISTANT: Can I know your name please for documentation purpose?

USER: I am Kevin Young.

ASSISTANT: Thank you for reaching us. Have a great day.