You can find the entire repo here.

config/automation/Speech/announcements.yaml

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+##########  ############################################################
+##  Announce when people come or go.
+## Announce over all Chromecast Audios
+######################################################################
+- alias: 'People Greeting'
+
+  trigger:
+    - platform: state
+      entity_id:
+        - device_tracker.carlo
+        - device_tracker.stacey
+        - device_tracker.franco
+        - device_tracker.yolanda
+      from: 'not_home'
+      to: 'home'
+      for: '00:02:00'
+
+  action:
+    - service: script.speech_engine
+      data_template:
+        personarriving: >
+          {% set person = trigger.entity_id.split('.')[1]|replace('_', ' ')%}
+          {%- macro greeting_sentence(person) -%}
+          {{ [
+          "Welcome back home " ~ person,
+          "Guess who is home?" ~ person +" is!",
+          person + " is now in the house.",
+          "Welcome Home " ~ person + ".  We have missed you. Or at least Molly did.",
+          "Our home is now complete, Rest your head and relax your feet! Welcome Back " ~ person,
+          "Life is like a song, you’re back where you belong. Welcome home " ~ person,
+          "Hey there " ~ person + " Welcome Home!",
+          "Knock Knock. Who is There? "   ~ person +" is!",
+          person ~ "! You are home!",
+          "I know a secret! "  ~ person +" is home!"
+          ] | random }}
+          {%- endmacro -%}
+          {{greeting_sentence(person)}}
+        call_responsibilities: 1
+        call_no_announcement: 1
+        call_garage_check: 1
+        call_window_check: 1