CortanaCommands.xml

<VoiceCommands xmlns="http://schemas.microsoft.com/voicecommands/1.1">
  <CommandSet xml:lang="en" Name="CortanaCommands_en">
    <CommandPrefix>Switch the light</CommandPrefix>
    <Example>Switch the light in the bathroom on.</Example>

    <Command Name="switchLight">
      <Example>in the bathroom on</Example>
      <ListenFor>in [the] {room} {status}</ListenFor>
      <Feedback>{room}light will be switched {status}.</Feedback>
      <Navigate />
    </Command>

    <PhraseList Label="room">
      <Item>Bathroom</Item>
      <Item>Kitchen</Item>
      <Item>Livingroom</Item>
    </PhraseList>

    <PhraseList Label="status">
      <Item>on</Item>
      <Item>off</Item>
    </PhraseList>        
  </CommandSet>
</VoiceCommands>