You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you at present?

USER: Could you please book a flight ticket from AUS to MSP?

ASSISTANT: Sure, can I know your good name please?

USER: I am Lisa Hernandez.

ASSISTANT:  When you are willing to travel?

USER: My travel dates are Nov 04 and Nov 06.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT:  Would you let us know if you have any other preferences?

USER: I don't have any other specifications.

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

USER: No problem, thank you.

ASSISTANT: Thank you for choosing us.