User scenarios are the stories that your persona acts out. Basically user scenarios are thoughts or exercises (though usually represented visually) in which you predict how certain types of users represented by your personas will interact with you website in a given situation in order to complete a given goal. User scenarios let you understand what your future users will look for when trying to complete tasks on your site. Scenarios include information about:
Scenarios are neither predictions nor forecast but rather attempts to reflect on or portray the way in which a system is used in the concept of daily activity.