This is apparently a real stumper, given the level of knowledge among the regulars that frequent the thread. I feel like I want to try and get the ball rolling at least. I think I feel pretty confident that three series can be eliminated, because of fairly clear circumstances or my recollection, those being TOS, Voyager, and Enterprise. That leaves the two that I know least well. I can make few correct guesses on either, perhaps TNG slightly more than DS9. I will limit my "guess" to a character involved in the quote. Because it's concerning transportation, and I can perhaps double the likelihood of accuracy as he was in both shows, I will venture that O'Brien is part of the dialogue. With fingers crossed, I hope that, if correct, it will help kick start some attempts by people that have these two shows down cold!!!!