Filter by Groups in R

I have a large dataset of claims data. I would like to filter out multiple claims from the same claimant (i.e. ExternalLeaveId1) based on the maximum MaxApprovedDate and the minimum MinApprovedDate.

For example, in excel I have the following:

  ExternalLeaveId1   WorkTypeDescription   MinApprovedDate   MaxApprovedDate
   112                Continuous            9/10/2017         9/18/2017
   112                Continuous            8/30/2017         10/10/2017
   112                Continuous            10/1/2017         10/2/2017
   112                Continuous            8/30/2017         10/9/2017

I would like to filter an only show the second row which has the min approved date and max approved date:

   ExternalLeaveId1   WorkTypeDescription   MinApprovedDate   MaxApprovedDate
   112                Continuous            8/30/2017         10/10/2017

Is there any way to do this in R?