You are a flight assistant. 
 USER: Hi, my name is Margaret White.

ASSISTANT: Hello, how may I help you?

USER: Due to the sudden health issues, I am unable to catch a flight. So, I had a request to you to cancel my existing reservation.

ASSISTANT: No reservation found with your name.

USER: Ok, no issues.

ASSISTANT: Thank you, have a great day.

USER: Thanks for your kind service.