actions.xml

<actions>
// 1:
  <action intentName="actions.intent.GET_STOCK_QUOTE">
// 2:
    <fulfillment urlTemplate="app://stocktracker/query{?symbol}">
// 3:
      <parameter-mapping
          intentParameter="tickerSymbol"
          required="true"
          urlParameter="symbol" />
    </fulfillment>
// 4:
    <!-- Fallback fulfillment when no parameter supplied -->
    <fulfillment urlTemplate="app://stocktracker/home" />
  </action>
</actions>