title: Google Action asking for parameters before account linking
body: <p>I am using <a href="https://developers.google.com/actions/identity/oauth2?oauth=code" rel="nofollow noreferrer">OAuth Authorisation Flow</a> for my google action and for some reason, it is asking for parameters then initiating account linking and then asking for parameters again.</p>
  
  <h3>Example Response:</h3>
  
  <p><img src="https://user-images.githubusercontent.com/41849970/59143672-e642c980-89ea-11e9-9ec0-245ec03a0232.png" alt="image">
  <img src="https://user-images.githubusercontent.com/41849970/59143765-cd86e380-89eb-11e9-98a4-53d0d559adf0.png" alt="image"></p>
  
  <h3>Code</h3>
  
  <pre><code>app.intent('Create Channel Intent', async (conv, params) =&gt; {
  
    if (!conv.user.access.token) {
  
      conv.ask(new SignIn());
  
    } else {
  
      var locale = conv.user.locale;
  
      if (locale === 'hi-IN') {
  
        var accessToken = conv.user.access.token;
  
        var channelNameRaw = params.channelname;
        var channelNameData = await helperFunctions.hinditranslate(channelNameRaw);
        var channelNameLwr = channelNameData.toLowerCase();
        var channelName = helperFunctions.replaceWhitespacesFunc(channelNameLwr);
  
        const headers = await helperFunctions.login(accessToken);
        const speechText = await helperFunctions.createChannel(channelName, headers);
  
        conv.ask(speechText);
  
      } else {
  
        var accessToken = conv.user.access.token;
  
        var channelNameRaw = params.channelname;
        var channelNameData = channelNameRaw.toLowerCase();
        var channelName = helperFunctions.replaceWhitespacesFunc(channelNameData);
  
        const headers = await helperFunctions.login(accessToken);
        const speechText = await helperFunctions.createChannel(channelName, headers);
  
        conv.ask(speechText);
  
      }
  
    }
  
  });
  </code></pre>
  
  <h3>Dialogflow</h3>
  
  <p><img src="https://user-images.githubusercontent.com/41849970/59143733-78e36880-89eb-11e9-933a-b600558326a7.png" alt="code">
  <img src="https://user-images.githubusercontent.com/41849970/59143741-8c8ecf00-89eb-11e9-8b98-838e038b7f9c.png" alt="code"></p>