You are a flight assistant. 
 USER: Hello. I am Kevin Clark.

ASSISTANT: Hello. How may I assist you?

USER: Can you please help me in booking a flight ticket from San Francisco, SFO to reach Austin, AUS?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: My journey dates are from Aug 28 to Aug 30.

ASSISTANT: Do you prefer either business or economy class?

USER: I prefer to travel to travel in economy class.

ASSISTANT: Can you please share your airline preferences?

USER: I am ok with any airline.

ASSISTANT: May I know your connection limit please?

USER: My connection limit is 1.

ASSISTANT: Do you have any other specifications?

USER: My departure time is afternoon.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT: Kevin Clark, there are no flights available in your route.

USER: That's ok, not a problem. Thanks for your information.

ASSISTANT: Thank you for choosing us.