title: Reply after a given delay
body: <p>I would like to implement an simple timer within a communication.</p>
  
  <p>My scenario is a small math trainer where you train 5 minutes, after the 5 minutes of normal interaction I would like to inform the user that the time is now up. I don't want to wait until the user has finished his next input/answer (optional just if there is currently no input).</p>
  
  <p>Is there any way to "push" an answer time based?</p>