You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Please book a flight ticket from AUS to MSP?

ASSISTANT: May I know your trip dates?

USER: My journey dates are Aug 09 and Aug 11.

ASSISTANT: Let me know your connection limit.

USER: I need a connecting flight.

ASSISTANT: Is there any other specifications?

USER: No.

ASSISTANT: May I know your name?

USER: I am Frank Collins.

ASSISTANT:  Sorry, there are no flights which travels to your region on your planned dates of journey due to heavy bookings.

USER: No problem, thank you for your information.

ASSISTANT: Welcome Frank Collins.