Hi.
user
Hello, 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, I can help you with that. Can I know your name?
assistant
Sure, my name is James Walker.
user
James Walker, sorry to inform you their is no reservation under your name.
assistant
Ok, no problem.
user
Thank you for reaching us.
assistant
Thank you for checking.
user
Have a great day, keep reaching us in future.
assistant