title: How to get Dialogflow to trigger an intent with ANY input without using fulfillment
body: <p>Not much to add to this question I don't think. Basically, I have a series of questions the user needs to answer, but they are veeeery open-ended, so the user input could be pretty much anything. Once the user responds to a question I want the system to simply ask the next one, regardless of what they said (unless they say something like "help" or "I don't understand", etc, which I can deal with).</p>
  
  <p>I know I can include contexts, but without supplying the next intent with adequate user input, there doesn't seem like a way to get it to trigger the next question (even when the output and input contexts match).</p>
  
  <p>Is there something I'm missing, or do I really need to just supply dozens and dozens of potential user inputs from across the board and hope the machine learning component extrapolates adequately?</p>