I do that now and it brings me a lot of joy. Recently while leaving a botanical garden I spoke to a man who was excitedly looking for a few specific plants. He is a botanist (amateur? professional? unclear) and I enjoyed sharing in his passion for a moment. Then I saw a maintenance guy moving with great intention who took a moment to ask me and my family if we had a nice time. We did, and I asked him about the papers in his hand. “Gotta get approval for this purchase request asap.” He said. We talked a bit about how nice it is to work at such a beautiful place.
I highly recommend talking to strangers! People are lovely. Go out and try it.