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(), light.toggle(), light.turn_off(), light.turn_on(rgb_color,brightness), 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.cancel(), timer.pause(), timer.pause(), timer.start(duration)
Devices:
media_player.sunroom_cd_player 'Sunroom CD Player' = playing;Sex and the City;vol=0.64
media_player.basement 'Basement Media Player' = off
light.garden_path 'Garden path lighting' = off
todo.vacation_planning 'Vacation planning assistant' = 19
light.upstairs_attic_zwave 'Upstairs Attic Light' = off;darkturquoise (8, 235, 202)
timer.timer7 'Custom timer 7' = active
climate.carrier_cor 'Carrier Cor Wi-Fi Thermostat' = fan_only;Auto Low;21C;80%
user
switch the system to heat_cool mode.
assistant
changing hvac to heat_cool mode.
```homeassistant
{"service": "climate.set_hvac_mode", "target_device": "climate.carrier_cor", "hvac_mode": "heat_cool"}
```