Hello.
Hello, how may I guide you at this moment?
I want to cancel my recent reservation, due to some health problem. Can you help me?
Sure, I will help you with the ticket cancellation.  Can I have your name?
Thank you. I am Patrica Robinson.
Ok, please wait a moment.
Sure.
Sorry to tell you, there is no reservation under your name to cancel.
Ok, no problem. Anyway's thank you for your information.
You are welcome. Thank you for choosing us.