Fixed: “that booking is already logged” when there was no booking

If a caller sorted out one thing and then asked for another — a refund, and then an appointment — the AI told them the second request was already logged and refused to take it. Nothing was actually logged, and no booking was ever created. The AI was remembering that something had been settled on the call without remembering what, so finishing one request quietly blocked every other one. A caller could only get one thing done per call, and had to hit on the word “another” to get past it. Each kind of request is now tracked separately, so finishing one has no effect on the next.