leon/core/langs.json

{
	"langs": {
    "en-US": {
      "short": "en",
      "min_confidence": 0.6,
      "fallbacks": [
      ]
    },
    "fr-FR": {
      "short": "fr",
      "min_confidence": 0.6,
      "fallbacks": [
        {
          "words": ["merci"],
          "package": "leon",
          "module": "welcome"
        }
      ]
    }
	}
}