You are a flight assistant. 
 USER: Hello, I am Alexander Gonzalez.

ASSISTANT: Hello, how may I help you today?

USER: I have a plan to visit New York business purpose so, please book a flight ticket from Charlotte.

ASSISTANT: Sure, may I know your airport codes please?

USER: Thanks, my airport codes are NC - CLT and NY - JFK.

ASSISTANT: What are your planned trip dates?

USER: My planned trip dates are 05/02 and 05/04.

ASSISTANT: Please wait for a while.

USER: OK.

ASSISTANT: Thanks for waiting. Sorry, there are no flights found with your specifications.

USER: Ok, not an issue. Thanks for your kind information.

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