title: How can my RedApp retrieve current PNR open in sabre red workspace
body: <p>I am new to Sabre redapp development. My redapp use case is to get an event notification when a new booking is made and to get the currently opened PNR in the agent workspace. </p>
  
  <ol>
  <li>I see that I can subscribe to events based on action code, but I
  do not know what the action code is for a new booking command. Also
  if I have to filter through all commands, what should I filter on?  </li>
  <li>Secondly I want to get the PNR opened in the workspace. The
  IWorkBenchService gives the WorkAreaData object, but it only has an
  API <code>isPNRPresent()</code>. How can I read the current PNR data into my
  Redapp?</li>
  </ol>