Hello.
user
Hello, how can I assist you?
assistant
I have to cancel my reservation due to my planned event got cancelled. So please help me with that.
user
Sure, I can help you with that. May I know your good name please?
assistant
Thank you. Please check the  reservation with my name Katherine Smith.
user
Ok, please wait for a while.
assistant
Sure, take your time.
user
Katherine Smith, there is no active reservation found under your name to do cancellation.
assistant
Oh! It may not be booked properly. Anyway, thank you for your time.
user
Thank you for choosing us.
assistant
Most welcome.
user