One of the ways of writing stories, especially fictional ones is by recalling a real event that closely matches the theme you have been given then change the names of the people involved into fictional ones.
<h3>How do you write a story?</h3>
When writing a story, you must keep the theme in view. In this case, the theme is:
"It was all a dream".
Be sure to include the setting
Keep the characters in mind
Ensure that there is an element of suspense
Enhance the suspense by building quickly towards the climax, using words that are indicative of a change of pace
Then resolve the conflict and conclude with the theme "It was all a dream"