title: How to read and parse an .xml file
body: <p>I need to simply read an .xml file; like this:</p>
  
  <pre><code>&lt;exchanges&gt;
      &lt;exchange&gt;
          &lt;timestamp&gt;2010-08-19 17:15:56&lt;/timestamp&gt;
          &lt;userid&gt;Elijah-Woods-MacBook-Pro.local&lt;/userid&gt;
          &lt;clientname&gt;elijah&lt;/clientname&gt;
          &lt;botid&gt;Jarvis&lt;/botid&gt;
          &lt;input&gt;firsthello&lt;/input&gt;
          &lt;response&gt;Hello, sir. How may I help you?&lt;/response&gt;
      &lt;/exchange&gt;
  &lt;/exchanges&gt;
  </code></pre>
  
  <p>Then, parse whatever's in between the 'response' tag. </p>
  
  <p>Elijah</p>