Hello, Robert Thomas here.
user
Hello, how may I assist you?
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
Sure, Can you please give me a moment?
assistant
Ok.
user
Sorry, there is no reservation found on your name.
assistant
Ok, thank you for the information.
user
Thank you for reaching us.
assistant
Welcome.
user