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

ASSISTANT: Hello, how can I help you today?

USER: Can you please assist me in booking a flight ticket from Oakland, OAK to reach New York, LGA?

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

USER: My schedule dates are from Nov 25 to Nov 27.

ASSISTANT: Do you have any connection limit?

USER: I need a way station in between journey.

ASSISTANT: May I know your arrival and depart timings?

USER: My return time is afternoon.

ASSISTANT: Which class do you prefer either economy or business?

USER: I prefer to travel in business class flight.

ASSISTANT: Do you have any specifications?

USER: I am ok with any flight.

ASSISTANT: Sorry, there are no flights found on your planned trip dates.

USER: That's ok, not a problem. Thanks for your information.

ASSISTANT: Thank you for availing us.