Hello. I am Justin Lopez.
Hello, how may I aid you?
Unfortunately my exams was cancelled so I want to cancel my reservation. Could you please help me to cancel my reservation?
Sure, I am here to help you. May I know your good name please?
I have already mentioned above.
Please hold on a minute.
Ok, I will wait.
Sorry  to inform that, there is no reservation found on your given name.
Ok, no problem. Thank you.
Thanks for reaching us, have a nice day.