Task: As the wedding dance rehearsal is over, I want to delete the event from the Calendar app.
Steps:
Click on the menu icon at the top left corner of the screen
Click on the month option
Swipe the calendar towards the right to view the september month 
Click on the 21 september
Open the wedding dance rehearsal event
Click on the three dots at the top right corner of the screen
Click on the delete option
Click on the delete option