The self-order kiosk at McDonald's. The pharmacy counter. These are places where people want something quickly, food, advice, a product, and where the current interface is, frankly, a small disaster. Tap-tap-tap through menus, looking for what you want. Or, in the case of the pharmacy, a conversation that's actually quite personal, held while three people stand behind you.
What if you just say what you want? "Something with chicken, not too spicy, with a Diet Coke." Or "my son's scalp is itching, he's eight." And the kiosk gets it, suggests sensible options, follows up where needed, and handles it. Not as a chatbot in a corner, but as the standard way of ordering.