Making a chart to track entries across timeframes
 

So I have a tough one to figure out. I have a few columns of data, two
with dates, the start date and the finish date, the other with a
description. I need to create a graph that tracks each week and
tallies how many items started in a week, then a second column
representing which items finished in that week.

There would be a timeline along the x-axis, and a value for the y-axis
to track the numbers of items that occured in that week.