I don't know that I would "save" them, I'm not so conceited to think that I could, but I'd probably talk to them if I could, or if there was some immediate danger to their life that I could avert I might step in, on the off chance its some kind of accident or whatever. I'd try to be there and listen, and if they were really dead-set on doing the deed right there I might stick around and psychopomp 'em off to wherever. But I don't think I would save them. Even if they reconsidered after speaking to me I wouldn't consider that me saving them, that would be them making a decision for themselves, same as any person who follows through to completion.