Hello, I am Mary Hall.
user
Hello, how may I help you today?
assistant
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?
user
Sure, we are here to help you.
assistant
Thank you.
user
Please wait for a while.
assistant
Sure.
user
Thank you for waiting. We are happy to inform you that, we found  a reservation with your name. Shall I proceed to cancel it?
assistant
Yes, Please cancel it?
user
Your reservation has been cancelled.
assistant
Thank you for your help.
user
Thank you for reaching us.
assistant