Type one line, we set the filters

The rule

1. 1Dictionary first: regions, stations, services and equipment names come from the dictionary. Free and unlimited.
2. 2AI is called only when confidence is below 0.6 or unresolved words remain; the answer takes at most 8 seconds.
3. 3AI returns filters only: it never invents objects, prices or availability. Regions come only from the code list.
4. 4If AI is unavailable or the quota is spent, the dictionary result is shown. Search never stops.