title: Get the user's value of an intent in RASA Core/NLU
body: <p>I have the same question as in: <a href="https://stackoverflow.com/questions/51645905/get-intent-value-in-rasa-core-nlu/53428985#53428985">Get Intent Value in RASA Core/NLU</a>
  but I want the value that the user gives for a given intent.</p>
  
  <p>For example: </p>
  
  <pre><code>User: I want to take it (this sentence is an intent called: 'use_it')
  Bot: ....
  User: .... (Later in the chat I decide to answer with the same phrase of intent 'use it') 
  Bot: you said previously "I want to take it"
  </code></pre>
  
  <p>How can I do something like: <code>tracker.get_slot</code> but for intent?</p>
  
  <p>I don't want the name of the last intent I want the text of a user-given intent.</p>