You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you today?

USER: I am planning to book a flight to New York, so please help me in booking a flight on Dec 6th.

ASSISTANT: Sure, May I know your return date?

USER: Sure, I intend to return on 8th Dec.

ASSISTANT: Can you please share your travelling airport codes?

USER: My airport codes are DCA - LGA.

ASSISTANT: May I know your name please?

USER: Sure, my name is Jason Perez.

ASSISTANT: Let me know your connection limit.

USER: I need a single connection.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: I prefer a business class.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: We are regret to inform you that, we did not found any flights available in business class.

USER: No worries, thank you.

ASSISTANT: Thank you for availing us.