The Charisma Academy puts up a decent video on how to never run out of conversation here. I compared it to a couple others, but really liked how it was broad enough to use in lots of situations while still practical and actionable.
I tried to find a website to link to for them, but found a Charisma Academy with a very different design. So I couldn’t tell if they were the same Charisma Academy or not. If there’s a link for these folks let me know.