Hello.
user
Hello, how can I help you today?
assistant
I have an important party to attend at my friends house. So, I would like to change my existing reservation.
user
Let me check your details. May I know your name please?
assistant
My name is Jeffery Collins.
user
Sorry, I didn't found any reservation basis on your details.
assistant
That's ok. Thank you for the information.
user
You are welcome.
assistant