How to get plan start and end dates for a persons absence

Summary:

I want to build a report to show the start and end dates of a person enrolment in a plan as we need to write to each person when a plan will expire.

Content (required):

I have been trying to build a report that will show the plan details of a particular plan against a persons absence. Looking at the screen i can see the following

However when I build an OTBI report and limit it to just the one persons absence and one plan I get the dates in the activity start and end dates that are against each of the plans rather than just the one I was querying.