Hello.
user
Hello, how can I help 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, I am here to help you, can I know your good name to proceed further?
assistant
Raymond Moore here.
user
 I am very sorry to inform you that there is no reservation found under your name in our database.
assistant
That's ok, thank you for checking.
user
Thank you for reaching us.
assistant