Hi.
user
 Hello, how may I help you today?
assistant
 I need to cancel my reservation due to some personal issues. So can you help me with cancellation of my reservation?
user
Sure, May, I know your good name?
assistant
I am Brain Baker.
user
Sorry, we found no reservation on your given name.
assistant
No problem, thank you for the information.
user
Thank you for reaching us.
assistant