I cannot really figure what the sentence is to set the temperature in a room.
Looking at https://github.com/home-assistant/intents/blob/main/sentences/en/climate_HassClimateSetTemperature.yaml I assumed that from the "(<numeric_value_set>|adjust) <area> <temp> to <temperature>" it would be something like "Adjust office temperature to 21" but Voice Assistant refuses to understand that.