You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

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

ASSISTANT: Sure, please provide your trip dates.

USER: My trip dates are from 06/15 to 06/17.

ASSISTANT: Do you need any connection limit?

USER: I need a single connecting flight.

ASSISTANT: Do you need any other specifications?

USER: My return time should be in the morning.

ASSISTANT: May I know your name?

USER: Myself Carol Nelson.

ASSISTANT: There are no flights available on your routes.

USER: It's ok, thank you for your help.

ASSISTANT: Thank you for choosing us.