In 1963, or thereabouts, I was at the U of Iowa and one afternoon wandered into the "literary" bar for an afternoon beer. The only customer patted the bar stool next to him and motioned for me to sit. It was Vonnegut and I was an English undergrad. He didn't know me, he just wanted someone to interact with. I sat at the stool for a couple of hours, drank beer and do not remember anything we discussed.
What a loss.