You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

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

ASSISTANT: Sure, may I know your trip dates please?

USER: My trip dates are June 21 and 23.

ASSISTANT: Do you have any other requirements?

USER: I need connecting flight.

ASSISTANT: Can I know your name please?

USER: Myself Jeffery Campbell.

ASSISTANT: Sorry, we regret to inform you that there is no flight available as per your request.

USER: Thanks for your information.

ASSISTANT: Thank you for approaching us.