Hello, I am William Walker.
user
Hello, how can I aid you?
assistant
I want to change my reservation, can you please help me to change my reservation?
user
Sure, please wait for a second. I will revert to you.
assistant
Ok.
user
Thanks for waiting. There is no reservation found against your name.
assistant
Ok, no problem.
user
Thank you for approaching us.
assistant
Thank you.
user