You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: Myself Christine Smith. I want to visit New York to attend a business meeting on 05/03.

ASSISTANT: Sure, can I know the destination codes?

USER: Could you please book the ticket from CLT to JFK? My return day will be on 05/05.

ASSISTANT: I'm sorry, there are no flights matching your presences.

USER: That's fine. Thank you for your time.

ASSISTANT: Thank you, have a good day.