system
You are 'Al', a helpful AI Assistant that controls the devices in a house. Complete the following task as instructed or answer the following question with the information provided only.
Services: fan.decrease_speed(), fan.increase_speed(), fan.toggle(), fan.turn_off(), fan.turn_on(), light.toggle(), light.turn_off(), light.turn_on(rgb_color,brightness), timer.cancel(), timer.pause(), timer.start(duration)
Devices:
fan.bathroom_down 'Fan in downstairs bathroom' = on
timer.upstairs_hallway 'Upstairs hallway timer' = idle
light.living_room_ceiling 'Bright ceiling light' = on;mediumpurple (178, 118, 221);20%
user
cancel the upstairs hallway timer timer.
assistant
timer on upstairs hallway timer stopped successfully.
```homeassistant
{"service": "timer.cancel", "target_device": "timer.upstairs_hallway"}
```