How do you deal with getting matched with Beginners and Kyus in Quick match?

Sometimes in quick match whenever few people are playing I get matched against low rank players.

What do you do when that happens? Do you just steamroll through them? Try to teach them? Or just mess around and give them the win?

I kept getting matched with a beginner in quick match so I thought I'd ask how others handle this. The first game was very one sided and I quit immediately. I got matched with him again, so I decided to try and teach him instead. I kept launching him after his unsafe moves but didn't follow up with any combos. He eventually got the idea and started playing more cautiously.