if she seems unthreatening i'll usually give her up to 30 seconds even if i'm busy
(gotta be careful- one time this homeless woman was having a heated argument with my parked car -i walked up and she said "hello there" before bopping me over the head with her handbag)
statistically ..for me at least
these approaches haven't amounted to much since my college years
now it is only innocent flirting or joking around (=ego boost for them)
but whatever
sometimes they slide me a free apple pie or put my paperwork at the top of the pile
i'm probably still getting a net gain by playing along
there might come a day when i'm all alone feeding pigeons in the park
then i'm gonna be
hoping the bank teller wants to make extra small talk
a wise philosopher once said, "same people you shyt on on the way up, shyt right back on you on your way down"