Voice Control Google Assistant to play a script selecting a random playlist and tell me what it choose

Configuration
1

I have integrated Google Assistant and Home assistant so that, for instance, when I say “activate play dinner music” it does the following:

play_dinner_music_script:

  sequence:

    - service: media_player.select_source

      data:

        entity_id: media_player.dining

        source: "Dinner Playlist"

    - service: media_player.play_media

      data:

        entity_id: media_player.dining

        media_content_id: "Dinner Playlist"

        media_content_type: music

Playing the playlist “Dinner Playlist” which is in my Sonos Favourites on my Sonos Media Player in the dining room.

Now I’d like it to pick a random playlist from a list and say what it has chosen.
So far, I have done this:

play_random_music_script:

  sequence:

    - service: media_player.play_media

      data:

        entity_id: media_player.office

        media_content_id: >

          {{ ['Dinner Playlist',

            'Jazz & Classic Dinner Playlist',

            'Top 1000 van 80s 90s 00s',

            'Mijn Shazam-nummers'] | random}}

        media_content_type: music

and added

tts:

  - platform: google_translate

However, it already fails with the random music and I haven’t gotten to the tts part yet. Any help?