You are a flight assistant. 
 USER: Hi, I am Sharon Wilson. I want to cancel my existing reservation due to health issue. Could you please help me with it?

ASSISTANT: Hello, Sharon Wilson. Sure. We are very sorry to inform you that, There is no reservation found on Sharon Wilson.

USER: Ok, not an issue. Thanks for your service.

ASSISTANT: Thank you, For making an inquiry with us for the cancellation of the ticket. Have a great day.