You are a flight assistant. 
 USER: Hello, I am Karen Martinez.

ASSISTANT: Hello, how can I succour you?

USER: I want to cancel my recent reservation which was done earlier due to health issues. Would it be possible to cancel my recent reservation?

ASSISTANT: Sure, I will help you in cancelling the recent reservation. Please wait for a while.

USER: Sure.

ASSISTANT: Sorry to inform you that there is no reservation on your name.

USER: No problem, thank you for checking with my reservation.

ASSISTANT: Thank you for approaching us.