I often ask Siri to find something for me, like an address. She will inevitably say "Is this the one you are looking for?" I almost always answer with "Yes, thank you." I find it really difficult to drop the 'thank you'. It feels unfinished somehow, to just say 'yes'. It amuses my partner (and my son).
I'm equal opportunity though, I have managed to hurt the feelings of a robot as well. I once swore at a chatbot on a bank app when 'he' kept failing to answer my question. The comeback was, "I'm just trying to help" and a sad emoji. Cracked me up.