Hello,.
Hello, how can I help you?
I want to cancel my recent reservation, due to office work that my manager did not approve  my leaves, so can you please cancel it?
Sure, May I know your name for cancel purpose?
Helen Gonzalez is my name.
Ok, wait for some time.
Sure.
We found a reservations found on your name, Shall I proceed for cancel ticket?
Sure, please proceed to cancellation.
Your ticket has been cancelled. Thanks for choosing us.