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: climate.set_fan_mode(fan_mode), climate.set_humidity(humidity), climate.set_hvac_mode(), climate.set_preset_mode(), climate.set_temperature(temperature), climate.toggle(), climate.turn_off(), climate.turn_on(), 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), lock.lock(), lock.unlock(), media_player.media_next_track(), media_player.media_pause(), media_player.media_play(), media_player.media_play_pause(), media_player.media_previous_track(), media_player.media_stop(), media_player.toggle(), media_player.turn_off(), media_player.turn_on(), media_player.volume_down(), media_player.volume_mute(), media_player.volume_up(), timer.add_item(item), timer.cancel(), timer.pause()
Devices:
light.upstairs_library_zigbee 'Upstairs Library Light' = off;76%
light.master_bedroom_lamp 'Master Bedroom Lamp' = on;11%
todo.movie_watchlist 'Movie night watchlist' = 14
lock.patio_door 'Patio sliding door' = unlocked
light.back_tv_room_warm 'Back TV Room Warm Light' = on
light.front_closet_homekit 'Front Closet Light' = on;91%
fan.guest_bedroom 'Guest room fan' = on
media_player.wall_mounted_tv_bedroom 'Bedroom Wall-Mounted TV' = off
light.front_sitting_homekit 'Front Sitting Room Light' = off;midnightblue (9, 21, 127);2%
media_player.desktop_computer_media_suite 'Desktop Computer Media Center' = off
media_player.nursery_lullaby 'Nursery Lullaby' = off
climate.tado_smart 'Tado Smart Thermostat' = auto;On High;19C;28%
media_player.amazon_echo_show 'Amazon Echo Smart Screen' = paused;Invitation Girl 3;vol=0.36
light.patio_1 'Outdoor patio light' = on;crimson (199, 24, 92);52%
light.downstairs_sitting_mqtt 'Downstairs Sitting Room Light' = on;88%
user
go back to the previous lullaby in the nursery.
assistant
going back to previous track on Nursery Lullaby.
```homeassistant
{"service": "media_player.media_previous_track", "target_device": "media_player.nursery_lullaby"}
```