title: can we use SSML tags with confirmation event in dialogflow fulfillment
body: <p>I have an intent where I am confirming the customer phone number, but instead of saying it as characters, agent says it as cardinal</p>
  
  <p>customerNumber is 1234567890</p>
  
  <pre><code>conv.ask(new Confirmation(`You told ${customerNumber}, is that right please confirm?`));
  </code></pre>
  
  <p>I tried this too but it didn't work</p>
  
  <pre><code>conv.ask(new Confirmation(`&lt;speak&gt;You told &lt;say-as interpret-as='characters'&gt;${customerNumber}&lt;/say-as&gt; is that right please confirm?&lt;/speak&gt;`));
  </code></pre>
  
  <p>SSML works fine with a simple response but it is not working with a confirmation response. How can I have it speak the number as characters? </p>