I love when this kind of thing happens
I had it once I was at a local department store (no knitting shops close by that I am aware of)...
And there were six of us in the knitting section. I commented to one lady about what she thought would be a good sock wool.
Turns out I was the only experienced knitter in that section! I ended up sending two people to the cash having opened up needles and yarn and casting on and knitting a few rows so that they could get going on learning how to knit!
Knitting is so much fun that way... very social and opens conversations!