You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Brandon Lee here.

ASSISTANT: Nice to meet you.

USER: I want to attend a Seminar in New York. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I can help you with that. May I know your planned travel dates please?

USER: My travelling dates are 02/09 and 02/11.

ASSISTANT: Can you please help me with your airport codes?

USER: My airport codes are LGA and JFK. I want to departure on afternoon.

ASSISTANT: May I know your class and airline preference please?

USER: I am comfortable in any class.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Sorry to inform you that there are no flights available on those dates with your given details.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for choosing us, have a nice day.