Change What Table Displays Based On Slicer Selection

Hello, Looking for some help here and I'm not finding anything searching the forums.  Here is what I'm trying to do.  I have some cities that are in certain groups, along with passengers for each city.  Very Brief Example table below:

City     Passengers    Group

ATL     100                A

LA       50                  A

NYC    67                  B

SF       40                  B

If I have a City slicer, is there someway to allow only those cities in that slicer's selection group to show in the table (i.e. I choose ATL in the slicer and I get the table above, but with only ATL and LA showing as they are Group A).  I know I could select each city in the slicer, or have a slicer with Groups, but I was trying to make this dumbed down for an end user and it would show all the peers for that group.  Hope that makes sense.

Thanks for any help.