Hello, I am Karen Evans.
Hello, please feel free to say, How may I help you?
I want cancel my reservation due to sudden health issue, so I can not travel.
Ok, Please hold on for a minute. I will check and revert to you.
Sure.
Thank you for waiting. I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.
Ok, thanks for informing.
 Thank you, for making us to serve you regarding ticket cancellation.