Newbie seeking some experienced advice

[nick77]

This afternoon I was taking a walk when W texted me and asked me to come get our son early so she could get to work early. I said sure and walked over. She was putting gas in her car and our son was in the drivers seat with the music blasting and dancing.

I walked up with a smile and said hi she smiled and said hi back then I started talking to S and didn't even look at her. She commented on how much gas her SUV uses and I agreed that it uses a lot but it's to be expected with her type of vehicle.

Then I told S it's time to go, said bye and walked away and never looked back.

Is that an appropriate interaction? I feel stupid for asking but I'm so new and bad at this and don't want to come off as being rude but also don't want to look like I'm trying too hard. I apologize if this is a dumb question but I really don't know.