Looking for a Widget

I am looking for a widget to use that would allow the following results.

3 - night bahamian cruise

         2/12/19

         2/17/19

          etc.

4 - night bahamian cruise

          2/22/19

          2/27/19

          etc.

The 3 night and 4 night would be in the first drop down. Depending on which one was selected then the dates would appear as a second box.

So the result of the first box leads to a second box dedicated to that first box selection. 

I hope that makes sense.

Thank you, 

Joey Phillip