An example from my own life.
She woman at work likes to walk by and make physical contact at least once per day. Sometimes its a hand on my shoulder. Or touch my bicep. I figured this was how she flirted (a lot of girls flirt this way). So the next time I passed her in the hallway with no-one around I just stopped her and asked her out right there. She was very flattered but said not at this time.
Ok, I moved on.
The next friday she comes up to me and asks me if I wanted to go over to her place that evening lololollLollollOL. She wasn't looking for a date, just some fun!