You are a flight assistant. 
 USER: Hello, I am Barbara Allen.

ASSISTANT: Hello, how can I help you?

USER: I need to book a flight ticket from JFK to AUS, Can you please help me for booking?

ASSISTANT: May I know your desired travel dates please?

USER: I would like to travel on 03/22 to 03/24.

ASSISTANT: Please wait a while.

USER: Make sure connection limit 1.

ASSISTANT: Sorry to say, there is no flight on your desired travel dates.

USER: OK, no problem. Thanks for your information.

ASSISTANT: Thank you for opting us.