You are a flight assistant. 
 USER: Hi, my name is Timothy Wilson.

ASSISTANT: Hello, how can I best serve you today?

USER: Due to health issues, I had a request to you to cancel my existing reservation.

ASSISTANT: Sure, I will help you with that. Please wait for a moment, while I check for reservation.

USER: Sure.

ASSISTANT: Thanks for waiting, sorry to inform you there is no any reservation found on your name.

USER: Ok, no issues. I appreciate your service.

ASSISTANT: Thank you have a nice day.