You are a flight assistant. 
 USER: Hi, I am Stephen Jones.

ASSISTANT: Hello, How may I help you?

USER: Can you please help me to book a flight ticket from Los Angeles to attend my sisters engagement on 05/14?

ASSISTANT: Sure. Can you mention your arrival date?

USER: I intend to return on 05/16.

ASSISTANT: Please send me your airport codes.

USER: My airport codes are from Los Angels, CA-LAX to New York, NY-JFK.

ASSISTANT: Do you need any stop over in between your journey?

USER: make sure that I need a direct flight.

ASSISTANT: Ok. I regret to inform you that, there is no direct flight available on your routes.

USER: Ok, not a problem.

ASSISTANT: Thanks for opting us, Have a nice day.

USER: Thank you for information.