You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Nicole Robinson. I am planning to watch movie in Broadway theatre at New York, JFK with my friend. Can you please book a ticket on 04/20?

ASSISTANT: Sure, can you please share your return date?

USER: I will return on 04/22.

ASSISTANT: May I know your origin airport code?

USER: Source code is Charlotte, CLT.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no flights found on your given dates.

USER: No problem. Thank you.

ASSISTANT: Thank you for choosing us.