Hello,. I am Scott Turner.
user
Hello, may I know  how can I help you today?
assistant
I want to change my existing reservation so please help me out.
user
Sure, can you please wait for a while.
assistant
Ok.
user
Thank you for waiting. Sorry to inform you that, we did not find any reservation with your name.
assistant
Ok, no problem. Thank you.
user
Thank you for reaching us.
assistant