You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Carolyn Davis.

ASSISTANT: How can I help you today?

USER: I am planning to book a ticket from AUS to JFK. Can you please help me out to book a ticket for me?

ASSISTANT: Sure, I am here to help you in booking process. Could you please share your travel dates?

USER: I am planning to travel on Nov 07 and return back on Nov 09.

ASSISTANT: Do you have any class preference?

USER: No, I am looking for a connecting flight.

ASSISTANT: May I know your departure time and return time?

USER: My depart time is afternoon.

ASSISTANT: Do you have any specifications?

USER: No.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, no flights are available on your preferable travel dates.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for reaching us, have a nice day.