You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Can you help me in booking my flight ticket from AUS to SFO?

ASSISTANT: Help me with your journey dates, so that it will be easier to move further in booking.

USER: My trip dates will be Apr 3rd to Apr 5th.

ASSISTANT: May I know your max connection limit?

USER: I prefer a connecting flight.

ASSISTANT: Do you need any other preferences?

USER: I prefer a flight that should depart in the afternoon.

ASSISTANT: May I know your name to proceed further?

USER: I am Katherine Moore.

ASSISTANT: We regret to inform you that there is no flights going on your way.

USER: Its ok, thank you.

ASSISTANT: Thank you for opting us.