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(), 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(), vacuum.pause(), vacuum.return_to_base(), vacuum.start(), vacuum.stop()
Devices:
media_player.office_pc_speakers 'Office Computer Speakers' = playing;Ripper Untold;vol=0.66
climate.trane_comfortlink_ii 'Trane ComfortLink II XL1050' = heat;Off;25C;47%
vacuum.under_sofa_cleaner 'Under sofa cleaner' = cleaning
todo.car_maintenance_log 'Car maintenance tracker' = 9
user
switch the system to fan_only mode.
assistant
changing hvac to fan_only mode.
```homeassistant
{"service": "climate.set_hvac_mode", "target_device": "climate.trane_comfortlink_ii", "hvac_mode": "fan_only"}
```