You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. By what way can I aid you today?

USER: I am Margaret Robinson.

ASSISTANT: Ok.

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

ASSISTANT: Sure, I can help you in that. Please wait, let me check your reservation status.

USER: Sure.

ASSISTANT: Sorry Robinson, there is no active reservation found on your name to cancel it.

USER: No problem.

ASSISTANT: Thanks for your presence.

USER: Thank you for your help.