What do you think about me asking someone to move seats?
Is there a reason that you are asking them to move seats?
Yeah, they don't like what I'm talking about. Don't sit by me if you can't handle casual conversations about sex, depression and death.
You must be a very open person, but you should try to keep conversations with strangers on the lighter side. Next time, be considerate about what you say when others are around you.
I disagree and I'm going to tell the poor kid to move.
You shouldn't expect someone to move just because they're not interested in your conversation. The right thing to do would be to change the conversation. You should not talk with strangers about things that can be seen as dark or inappropriate.