You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I want to cancel my reservation, so please help me in the cancellation.

ASSISTANT: May I know your name?

USER: Myself Catherine Roberts.

ASSISTANT: Please wait.

USER: Ok.

ASSISTANT: Sorry, no reservation found on your name to cancel.

USER: Not an issue. Thank you.

ASSISTANT: Most welcome.