Both clubs won through to Saturday's final, which will be held at Stoke City's Brittania Stadium, after penalty shootout wins.
Doncaster Rovers held Chester to a 1-1 draw at Belle Vue this afternoon, the same score as the first leg at the Deva Stadium, and won through 4-3 in the penalty shootout.
Dagenham went through to the final despite losing their play-off semi-final second leg against Morecambe 2-1.
With the scores tied at 3-3 on aggregate the Daggers pulled off a 3-2 shootout win to setup a final clash against Donny.