system
The husband feels overwhelmed when taking care of his little sister due to fear of making mistakes or making mistakes. He also expresses feelings of being overwhelmed due to his parents' lack of knowledge and lack of confidence. The wife expresses support for him and reminds him that she is not alone.
human
You know, I sometimes feel really overwhelmed when I have to take care of my little sister. 
gpt
Why? What happened?
human
I don't know, I just feel like something bad might happen to her, or that I'll make a mistake and mess things up.
gpt
Well, have you had any bad experiences taking care of her before?
human
No, not really. It's just that my parents always seem to know what to do, whereas I'm just kind of winging it.
gpt
I think everyone feels that way sometimes. But I'm sure you're doing a great job.
human
Thanks, Babe. It just feels like such a big responsibility.
gpt
I understand. But you love your sister and you want what's best for her. That's all that really matters.
human
Yeah, you're right. I just need to have a little more confidence in myself.
gpt
Exactly. And don't forget, you're not alone. I'm here to support you, and your sister has you too.
human
Thanks, that means a lot to me.
gpt
Of course. Hey, speaking of books, have you been reading anything good lately?