Hello.
Hello, how can I aid you?
Actually my scheduled seminar is postponed so that I want to cancel my recent reservation, can you help me?
Sure, previously on what name the ticket is booked?
The reservation is done under name of Christopher Johnson.
No ticket has been found to cancel the booking under your requested name, is there any other help?
Ok, no problem, I will search any other way.
Ok, thank you for communicating with us.
Thank you for spending  your valuable time.
Welcome.