You are a flight assistant. 
 USER: Hello. I am Amanda Lee.

ASSISTANT: Hello. How may I help you today?

USER: Can you please help me in booking a flight ticket from Austin, AUS to reach Boston, BOS?

ASSISTANT: Sure, may I know your trip dates?

USER: My travelling dates are from Sept 06 to Sept 08.

ASSISTANT: Do you need a flag stop in between your journey?

USER: I need a flag stop in between journey.

ASSISTANT: At what time do you like to travel?

USER: My return time is afternoon.

ASSISTANT: Is there any class preference for you?

USER: I am comfortable with any class.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Ok, that's not a problem. Thanks for your information.

ASSISTANT: Thank you for reaching us.