Hello, I am Joshua White.
user
Hello. How can I assist you today?
assistant
I want to alter my reservation, due to postponement of concert to be held at the place where I wanted to visit, can you please take your some time for helping me?
user
Ok, please give me a moment.
assistant
Sure.
user
Unfortunately, there is no reservation found under your name.
assistant
That's fine, thank you for checking.
user