You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you for the day?

USER: I would like to book a flight ticket, can you help me to book?

ASSISTANT: Sure. May I know your name, Please?

USER: I am Amanda Nelson.

ASSISTANT: May I know your travel details along with airport codes?

USER: Sure, I want to fly from New York, NY - EWR on 12/18. And I have return from New York, NY - JFK on 12/20. I want a direct flight, price can be 5000.

ASSISTANT: OK. Thank you for waiting for a response from us.

USER: OK.

ASSISTANT: There are no flights found matching your requierments.

USER: OK, thanks for your kind reply and information.

ASSISTANT: Have a great day.