Hi. I am Karen White.
Hello, how can I help you?
I want to cancel my recent ticket booking due to office work that my manager did not approve my leaves, so can you please cancel it?
Sure,  I am here to assist you. Please stand by.
Thank you. Ok.
Thank you for waiting. Sorry to say no reservation found with your name.
Ok, no issues.
Thank you for reaching us, have a nice day.