Missed call at 11 PM Saturday
Sarah misses your line on a Saturday night looking for an emergency plumber.
Harper texts within 5 minutes referencing the emergency hint from the voicemail. When Sarah replies that her water heater is leaking, Harper warmth-scores HOT, alerts you on your phone with the address + situation, and tees up a 7 AM Sunday slot from your calendar.
"Hey Sarah — saw we missed your call. Got an emergency? Reply YES and I'll get the on-call tech to you fastest. Otherwise I can book 7 AM Sunday if that works."