Hello.
Hello, how may I serve you?
I would like to  cancel my recent reservation due to cancel of my seminar. Can you please help me?
Sure, will you please let me know your name?
Sure, I am Betty Brown.
Ok, please wait.
Sure.
Thanks for waiting, we could not find any reservation on your name in our data base.
No worries, thank you for the information.
Thank you for reaching us.