You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am planning to visit New York as a round trip, will you help me in booking the flight ticket from JFK to LGA?

ASSISTANT: Sure, may I know your name please?

USER: Myself Mary King.

ASSISTANT: Ok, may I know on which dates you are willing to travel?

USER: My preferable journey dates are Dec 31 and Jan 02.

ASSISTANT: Ok, may I know your connection limit please?

USER: I need a connecting flight.

ASSISTANT: Do you have any other specifications please?

USER: My return time must be in evening.

ASSISTANT: Sorry King, there is no flight found as per your travelling details.

USER: Ok, not an issue.

ASSISTANT: Thank you for opting us.

USER: Thank you for your information.