You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you now?

USER: I am Nancy Thompson. Can you please find a flight from New York-JFK to Charlotte-CLT?

ASSISTANT: Sure Nancy Thompson, I am ready to help you with that. Can I have your travel dates please?

USER: Thank you. My travel dates are Apr 17th and Apr 19th.

ASSISTANT: Ok, please wait a moment.

USER: Ok, please make sure that the price is 500 or less.

ASSISTANT: Sorry Nancy Thompson, no flight is available to you on your dates.

USER: It's ok, not a problem with that. Anyways thank you for checking.

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

USER: You are welcome.