Hi.
user
Hello, how may I aid you?
assistant
I am Patrick Lee, I want to change my reservation which I have done last week.
user
Sure, please wait a moment I will check your details and proceed further.
assistant
Thank you.
user
Sorry to say, there is no reservation on your name in my database.
assistant
It's ok, anyway thank you for the help.
user
Thank you for reaching us, have a nice day.
assistant
Most welcome.
user