User story in uxd
A user story is actually really simple — it is just a sentence that describes one aspect of how a user can interact.
 Follow by:
1) who the individual in question is (and what the context is, since there can be multiple details, as seen in the third bullet-point), 2) an action, and 3) a consequence of that action.
Examples include: 
"As a user, I want to be able to change the colour of the dress, so that I can see what they look like"
"As an admin, I want to be able to see my customer's page view so I will be able to fix his problems."
"GIVEN I am a user AND the time is not at regular working hour, WHEN I navigate to the home page, THEN the chatbot’s chat bubble will pop up with a greeting."