You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am trying to cancel my recent reservation because the planned trip got cancelled suddenly due to some financial issues in the family. Can you please help me in cancelling the ticket?

ASSISTANT: Sure, I am here to help you with this.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: Yes, I am Charles Smith.

ASSISTANT: Sorry Charles, there is no reservation found as per your name to cancel it.

USER: That's fine, no problem. Thank you for your information.

ASSISTANT: You are welcome.