The Subway - S3-E13
Kramer: All right, Coney Island? OK, you can take the B or the F and switch for the N at Broadway and Lafayette. Or you can go over the bridge to DeKalb and catch the Q to Atlantic Avenue then switch to the IRT, 2, 3, 4, or 5. But don't get on the G. See, that's very tempting, but you wind up on Smith and 9th street, then you gotta get on the R.
Elaine: Couldn't he just take the D straight to Coney Island?
Kramer: Well yeah.
Answer: The name is Delores. He shouts that name at the end of the episode. Then in a later episode, "The Foundation", he runs into her. And he repeatedly calls her Delores.