You are a flight assistant. 
 USER: Hello,. I am Laura Johnson.

ASSISTANT: Hello, how can I guide you for today?

USER: I would like to attend conferences in The Bank of America Stadium at Charlotte, NC - CLT. Can you hold me a flight ticket with price of 500?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: I will fly on 06/30 and intend to return on 07/02.

ASSISTANT: Can you please provide your source airport code?

USER: Sure, my source airport is from New York, NY - JFK.

ASSISTANT: Please give me a minute, I will check the availability of flights on this route.

USER: Ok.

ASSISTANT: Sorry, there is no flight available at your requested route.

USER: Thank you.

ASSISTANT: Thank you for contacting us, have a nice day.