You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, we are gladly here at your service.

USER: I would like to book a flight ticket with the name Nicholas Harris.

ASSISTANT: Sure, can you please share your planned journey dates?

USER: Ok, I need to reach to New York on 12/25 and my return date would be on 12/27.

ASSISTANT: Ok, please mention your price limit and preference connections?

USER: The price limit should be 200.

ASSISTANT: Ok, may I know your source and destination to proceed further?

USER: My boarding point is DC-DCA and my landing point is NY-EWR.

ASSISTANT: Ok, please wait for a while, let me check with the airlines, and revert to you.

USER: Ok.

ASSISTANT: Thanks for waiting, sorry, unfortunately no flights found with provided name.

USER: Ok, no problem. Thank you.

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