However, it is considered o.k. (at your own risk, of course, not ours) to respond to "It's a nice evening, isn't it?" at dance halls, at free dances, bathing beaches, swimming pools, cocktail bars, church and YMCA socials.
Also, on the street (but only if you or he may be walking a dog and one or the other stops to admire it).
Most night clubs and cocktail bars do not admit or permit unescorted women after 10 P.M.
(At this writing the City Council and State Legislature are considering bills to ban unescorted women at bars at any time.)
Never talk to strangers in theatres, on subways or in other public places.
You may nod to him in a hotel if you both live there and have seen each other before.
DO NOT walk in Central Park, or other parks AFTER DARK, even if escorted.