You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am Raymond Miller. Can you book a flight ticket from JFK to AUS to attend a business meeting?

ASSISTANT: Sure, please share me your trip dates.

USER: My travel dates will be June, 6 and June, 8.

ASSISTANT: Is there any class preferences for you?

USER: No.

ASSISTANT: Do you need connecting flight or direct flight?

USER: I am comfortable with any flight.

ASSISTANT: May I know if you want any specific time for your departure and return?

USER: My depart time should be at afternoon.

ASSISTANT: Please wait for a while.

USER: Sure.

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

USER: It's ok, no problem.

ASSISTANT: Thank you for communicating with us.

USER: Thank you.