This is a script I use to play a sound file. It just asks siri “what is the weather like today” with siri responding by reading the weather.
The mp3 file is located in config/www/audio
1554696403234':
alias: Read Weather
sequence:
- data:
entity_id: media_player.living_room_speaker
media_content_id: http://<ip address>:8123/local/audio/weather_en_google.mp3
media_content_type: audio/mp3
service: media_player.play_media
Hope that helps.