title: ChatBot back to previous dialog
body: <p>I've created a chatbot using Node.js and the flow of dialogs works fine til the endDialog.  Im having issues implementing a back option so it can jump back only to previous dialog. Can anyone please guide me how to solve that? </p>
  
  <pre><code>  .reloadAction(
      "restartBenefits", "Ok. Let's start over.",
      {
          matches: /^start over$|^restart$/i
      }
  )
  
      .cancelAction(
      "cancelRequest", "Thank you for reaching out, Good bye!",
      {
          matches: /^nevermind$|^cancel$|^cancel.*request/i,
          confirmPrompt: "This will cancel your request. Are you sure?"
      }
  );
  </code></pre>