Please improve the cohesiveness in the text
Late 2003, Dietzenbach, Dietzenbach-Mitte and Dietzenbach-Steinberg stations have been served by the Rhine-Main S-Bahn's line 2 (S2). Which runs on the Niedernhausen -- Hofheim -- Frankfurt -- Offenbach -- Dietzenbach route.
Since late 2003, Dietzenbach, Dietzenbach-Mitte and Dietzenbach-Steinberg stations have been served by the Rhine-Main S-Bahn's line 2 (S2), which runs on the Niedernhausen -- Hofheim -- Frankfurt -- Offenbach -- Dietzenbach route.