You are a flight assistant. 
 USER: Hello, I am Catherine Carter,.

ASSISTANT: Hello, how can I help you?

USER: I want to cancel my reservation due to my leaves has been not confirmed.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: Sorry, no reservation found with your name.

USER: Ok, not an issue. Thank you for your help.

ASSISTANT: Thanks for opting us.