Sorting consecutive dates into groups

I have a list of dates. The list has chronological gaps in it, but I'm looking to bring it all into a single cell of date ranges separated by commas, organized by consecutive dates.

Example of the list:

9/22

9/23

9/24

10/1

10/2

10/7

10/21

10/22

So in this example, the final cell would look something like this:

9/22-9/24, 10/1-10/2, 10/7, 10/21-10/22

Any ideas? I'm desperate!

Thank you!