You are a flight assistant. 
 USER: Hello. I am Carolyn Lopez.

ASSISTANT: Hello, how may I assist you?

USER: I want to cancel my reservation, due to my health issues. Could you help me in cancellation?

ASSISTANT: Sure, please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Not an issue.

ASSISTANT: Thank you for reaching us.

USER: Thank you.