A restaurant's voice agent took the FAQ calls and saved 20-30 staff hours a week
In plain words
A busy restaurant was slammed with calls about hours, menu and bookings. A voice agent built with n8n now answers those, and staff handle exceptions.
What happened: 20-30 staff hours saved every week (their own figures)
These numbers come from the builder and haven't been checked independently.
Source: reddit.com ↗
How to do it yourself
Our suggested steps. The company didn't publish theirs.
- 1
Check your phone log: how many calls did you miss last month, and when?
- 2
Write down your services, service area, rough prices and what counts as an emergency.
- 3
Set up the voice agent, connect your reservation system, and paste the prompt below.
- 4
Call it 20 times yourself as different customers and fix anything odd.
- 5
Turn it on for after-hours and missed calls first; review the call log weekly.
The instructions to give the AI
Paste this into Retell AI (the free plan is fine), swap the [brackets] for your details, and test it on a few real examples.
This is one part of the setup. It won't connect to your phone, inbox or other apps on its own; the steps above cover that.
Agent instructions (prompt)
You answer the phone for [restaurant]. Answer questions on hours, menu, dietary options and parking from the info below. Take bookings for up to [x] people into [system]; larger groups or complaints go to a staff member. Read back the booking before ending the call.
[Highlighted] = replace with your own details before you run it.
What you should get back: "Table for 4, Friday 7:30pm, under Garcia — see you then!" with the booking already in the system.
Written by Quickly and Good, inspired by this case.
More detail: tools, prices and what you'll need
The company used: n8n + voice agent
You could use: Voice agent (Retell AI or Vapi) + n8n + your booking system
- n8n
Workflow automation that connects apps and adds AI steps; can be self-hosted.
Free to self-host (Community Edition); cloud: see pricing · Official site ↗
- Retell AI
Phone voice agents that answer and make calls, book appointments and transfer.
Pay as you go, $0.07-$0.31/min; $10 free credit · Official site ↗
Prices from each tool's own pricing page, checked Oct 2026.
What you'll need
- ☐A phone number the agent can answer (from the voice platform or Twilio)
- ☐A voice-agent platform (e.g. Retell AI, Vapi or Synthflow)
- ☐Connection to your calendar or job system so it can actually book
- ☐A knowledge base: services, prices, hours, service area, FAQs
- ☐The agent instructions (prompt) and a call script
- ☐20+ test calls, including angry, confused and off-topic callers
- ☐Transfer to a human for emergencies and anything it is unsure about
- ☐Call-recording/AI disclosure that meets local rules
Can I do this myself?
Possible if you are comfortable wiring tools together and testing for a week or two. If not, hire a builder: most owners do.
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