Hello.
user
Hello, May I know your name please?
assistant
My name is Andrew Miller, I want to change my existing reservation due to postpone of my friend marriage.
user
Ok, Andrew Miller, please wait for a while.
assistant
Ok.
user
Unfortunately, there is no reservation found with your name.
assistant
No problem, thank you for giving information.
user
 Thank you, For making us to serve you regarding enquiry process.
assistant