Hello, I am Laura Green.
user
Hello, how can I aid you?
assistant
As I was attending my sister's birthday party, but due to some reasons it has been postponed. I would like to change my reservation.
user
Sure, please wait I will let you know.
assistant
Ok.
user
Thank you for waiting. Sorry, no reservation found on your name.
assistant
Thank you for your information.
user
Have a good day.
assistant