In my experience - and folks here are free to disagree - I found when I treated women nicely, politely, and made them feel safe, that is when they wanted to be friends with me, or even started flirting with me. When I left my shyness rule me in high school, I acted aloof, and that got me no where. Instead, when I decided to be friendly, just going up to a girl/woman I did not know and just say "hi", and steer the conversation towards things they were interested in, and came across in a "safe" manner, it made a HUGE difference.

One unique thing to consider: you never know who is watching, and your reaction in such a situation may make all of the difference in another woman noticing you and wanting to get to know you better.