You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Susan Jackson.

ASSISTANT: May I know your good name, Please? OK.

USER: I want to cancel my reservation due to health issue. Can you help me out?

ASSISTANT: Sure. We are very sorry to inform you that, There is no reservation found on Susan Jackson.

USER: Not an issue, thank you for quick response.

ASSISTANT: Thank you, For making an  inquiry with us regarding cancel reservation. Have a great day.