You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am Mary Wilson. I would like to visit Charlotte next week so can you please help me in flight ticket booking process from JFK to CLT?

ASSISTANT: Sure, can you please share me with your travelling dates of journey?

USER: Thank you for your response, I want to take off on Mar 17 and book my return ticket also on Mar 19.

ASSISTANT: Please wait for a moment to check for the availability of a ticket.

USER: Ok, but I would like to depart in evening time so please check with this also.

ASSISTANT: Sorry Mary, there is no flight found as per your travelling details.

USER: Oh! It's ok no problem. Thank you for your service.

ASSISTANT: You are welcome.