Hello.
user
Hello. How may I help you?
assistant
I am Janet Lopez here. I want to cancel my recent  reservation due to some heath issue. Can you please help me to cancel my reservation?
user
Sure. Please wait for a moment. I have searched online but I could not find your flight reservation to cancel it.
assistant
Sure,take your own time.
user
Ok.
assistant
Thank you for your service.
user
Thank you.
assistant