Hello.
user
Hello, may I know how best I can help you today?
assistant
I want to change my existing reservation, can you help me with that?
user
Could you please provide your name to check your previous reservation status?
assistant
I am Raymond Scott.
user
We are sorry to inform you that, there is no reservation found with your name.
assistant
No problem, thank you for the information.
user
Thank you.
assistant