home-assistant-configuration/templates/kat_heading_home.yaml

 >
  {% macro getIntro() %}
    {{ [
        "Pardon me,",
        "Excuse me,",
        "I do not mean to interupt, but.",
        "I thought you might like to know."
        ] | random }}
    Katherine appears to be headed home. Based on current traffic conditions she should be here in {{states.sensor.kat_ett_home.attributes.duration | round}} minutes.
  {% endmacro %}
  {# a macro that removes all newline characters, empty spaces, and returns formatted text  #}
  {%- macro cleanup(data) -%}
    {%- for item in data.split("\n")  if item | trim != "" -%}
      {{ item | trim }} {% endfor -%}
  {%- endmacro -%}

  {# a macro to call all macros :)  #}
  {%- macro mother_of_all_macros() -%}
    {{ getIntro() }}
    
  {%- endmacro -%}
  
  {# Call the macro  #}
  {{- cleanup(mother_of_all_macros()) -}}