Which of the following is not mentioned?

W: There are pills for everything now, aren’t there?
M: Almost everything. There are pills for colds and pills for headaches.
W: There are pills for seasickness and pills for airsickness.
M:Those are the same, aren’t they? Being sick on a ship is like being sick on a plane, isn’t it?
W: I suppose so. There are pills to make you sleepy.
M:And there are pills to keep you awake.
W: But they’re bad for your health, aren’t they?
M:That’s right.
W: There is a pill to make you hungry, isn’t there?
M:I don’t know. But there are pills to keep you from being hungry. They’re for people who want to lose weight.
W: There’s a pill for almost everything, isn’t there?
M:But there aren’t any pills to learn languages, are there?