Well, your user's utterances are always going to hit intents, and you will then use those intents in yoru code to get what the user actually said. I suppose this is what you mean? If so, you can try and get free form text using LITERAL (US only) or a custom slot, but it will require some work and testign to make it accurate. See more here.
explain exports.register in scorekeeper? 2 Answers
JSON, API, and Alexa from total n00b 0 Answers