Hi.
user
Hello, how may I aid you?
assistant
I am Mary Campbell. I want to change my reservation, can you help in changing?
user
Sure, please wait a moment I will check your reservation details and proceed further.
assistant
Sure.
user
Sorry to say, there is no reservation on your name in my database.
assistant
That's ok.
user
Thank you for choosing us, have a nice day.
assistant
Thank you for your help.
user