Hello,.
user
Hello, how may I help you?
assistant
I am Barbara Williams. 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, wait a minute.
assistant
Ok.
user
Sorry, there was no reservation found on your name.
assistant
No problem, thanks for the information.
user
Thank you for reaching us.
assistant