title: Initiating a phone call
body: <p>Is it possible yet to initiate a phone call? E.g. if I'm making a branch finder action a dialogue might go like:</p>
  
  <pre><code>"Hi, where's my nearest store?"
  "Your nearest store is our Oxford Street branch, at 300 Oxford St, Marylebone."
  "Call it"
  "Sure"
  </code></pre>
  
  <p>It then initiates a call to the store, like an Android app using an <a href="https://developer.android.com/reference/android/content/Intent.html#ACTION_DIAL" rel="nofollow noreferrer">ACTION_DIAL</a> intent.</p>
  
  <p>I would think something like this <em>should</em> be possible, especially considering the current devices supporting Assistant are phones and Google Home, both of which can make calls (I guess future devices with assistant built in might not, but then there can be a check like <code>app.phoneCapabilities</code>). I've tried using <code>.addSuggestionLink</code> with a <code>tel:</code> address with no luck.</p>