Yes, it's tempting for me to think, "but if he'd just said this, or tried this approach, or talked this way, then he would get what he's after." But I only thought that for a second, because I've had to learn that lesson many times over.
Thinking that if you just do and say exactly the right thing, you can change that person's behavior. And LS's manipulation feeds into that, she constantly tweaks how and what she says, to try to keep him thinking if he just responds how she wants, he'll get somewhere. But he doesn't fall for it. He knew that no matter what he said, she would not give him the answers he wanted.
I've been on the receiving end of that kind of manipulation before, but usually it's from a child, or teenager at the most; or someone very immature.