You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Susan Smith, want to travel from AUS to DFW for business trip. Please help me in ticket booking.

ASSISTANT: Sure, may I know your trip dates please?

USER: My trip dates are from 10/21 to 10/22.

ASSISTANT: Please wait for a while.

USER: Ok. Please check for direct flight.

ASSISTANT: Sorry, there is no direct flight available which is travelling to your destination.

USER: That's fine, thank you.

ASSISTANT: Most welcome.