title: Can we reset context without removing one of the parameters from the context in Dialogflow
body: <p>In Dialogflow I have event context which is carried in all the intents, it has various information like the event id, app id, ip address and location as parameters in it.</p>
  
  <p>When I am trying to reset the context, I want to remove all the parameters except event id. How can I do it?  I have tried doing:</p>
  
  <p><code>context_obj = 
  {'name': context['name'], 'lifespan': 5,                                  'parameters': {'event_id': context['parameters']['event_id']}}</code></p>
  
  <p>But this does not seem to reset the other parameters.</p>