Hi,. I am Ruth Green.
user
Hello, how may I render you?
assistant
 Due to sudden change of my business meeting because of some technical problem, I need to change my reservation so can you help me with that?
user
Sure, let me check the list and revert you.
assistant
Sure.
user
we are sorry to inform you that, there is no reservation found with your name.
assistant
Ok, not a problem. Thank you.
user
Thank you for reaching us.
assistant