You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Donald Turner, I want to book a flight ticket. Please help me with that.

ASSISTANT: Sure. Can I know your Journey details?

USER: The source is NY-JFK and the destination is NY-EWR.

ASSISTANT: Your travelling dates please.

USER: My travelling dates are 02/02 and 02/04. I had a other requirement with price limit, that is 5000 or below and with connection 1.

ASSISTANT: Sorry Mr. Donald, I don't have flight with these dates.

USER: Its OK, thank you for checking.

ASSISTANT: Most welcome.