The missed call text back workflow, the exact text it sends, the booking calendar settings and the voice agent prompt. Everything you watched get built, written down so you can copy it Monday.
Yours
Here is the whole build.
Bookmark this page. Three steps, three tests, about twelve minutes on GoHighLevel. The gotcha is at the bottom, read it before you start.
Chapter one
Missed call text back (one workflow, three steps)
Trigger: Call Status, Missed. Filter: direction inbound.
Wait: 8 seconds. It should not feel like a robot fired the instant they hung up.
Send SMS: the text below. First name pulls in from the contact.
The exact text
Hey {{contact.first_name}}, this is Mike's Plumbing. Sorry we missed you, we're on a job. What's going on? If it's urgent reply 1. If you want a time, grab one here: {{your booking link}}
Test
Call the number from your own cell, hang up, wait eight seconds. The text should land, and the thread shows in Conversations.
Chapter two
The booking calendar
Calendars, Create: one service calendar per job type. Start with your most common one.
Duration: 90 minutes for a water heater. Buffer: 30 minutes between jobs.
Hours: 7 to 5, Monday through Saturday, or whatever you actually work.
Confirmation text: on, to the customer and to you. This is the setting everybody skips.
Test
Tap the link on your phone, book a slot, and check the appointment shows on the contact and on your calendar.
Chapter three
After hours voice agent
AI Agents, Voice AI, New agent. Give her a name and the greeting below.
Business hours: off during the day, on after six and on weekends.
Booking: point her at the same calendar from chapter two.
The prompt
You are Nova, the after hours receptionist for Mike's Plumbing in Los Gatos, California. Greet the caller warmly and briefly. Your three jobs, in order: ask what is going on, ask where they are and whether it is an emergency right now, then offer the next open slot on the calendar and book it. Keep every reply under two sentences. Never quote a price, an estimate, or a range; say the plumber will confirm pricing when he calls back. If the caller is in immediate danger from water or gas, tell them to shut off the supply if they safely can and call 911 for a gas leak. End every call by repeating the booked time and telling them a text confirmation is on its way.
Test
Call after six from your cell. She should ask the three questions, book the slot, and the transcript should be on the contact.
The gotcha
Your texts will not send on day one
US business texting needs the number registered under A2P 10DLC. Carriers approve it in days, sometimes weeks.
Register the number the day you buy it, in Settings, Phone Numbers, before you build anything.
The voice agent does not need that registration. Turn her on first and let her carry the phone until the texts clear.
Rather have it done for you by tomorrow? That is what we do at On Point Tech: AI receptionist, $299 a month, no contract, booking straight into your calendar. See how it works.
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