Hello, I am William Clark.
user
Hello, how can I help you?
assistant
I need to change my existing reservation due to prepone of my event. Could you please help mw?
user
Sure, I will help you, please wait for a while.
assistant
Sure.
user
There is no reservation on your name.
assistant
No worries, thank you for the information.
user
Thank you for approaching us.
assistant