You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am Laura Mitchell. I want to cancel my recent reservation due to health issues.

ASSISTANT: Sure, please wait a moment. I will check the reservation list and revert to you.

USER: Sure.

ASSISTANT: Sorry to inform you that there is no reservation exist on the name Laura Mitchell.

USER: Not an issue, thank you for your help.

ASSISTANT: Thank you for choosing us.