Hi.
user
Hello, how can I help you today?
assistant
I am Stephen Wright. I want to change my reservation, due to postponement of concert to be held at the place where I wanted to visit, can you please take your precious time for helping me?
user
Ok, please wait a moment.
assistant
Ok.
user
Sorry to say, no reservation found with your name.
assistant
No problem, thank you.
user
Thanks for reaching us.
assistant