Vendor or secondhand (grade C: vendor or secondhand)Undated vendor case study about an adjacent use (senior care, outbound). The dental booking line is our template.

A Senior-Care Practice Books Visits by Phone With Retell; a Dental Line Can Use the Same Tools

Pine Park Health, a senior primary-care practice, runs reminders and scheduling calls on Retell; Retell's case study reports a 55.7% booking rate and +38 NPS. Retell's Cal.com tools let a dental or med-spa line book live.

Who this is about: Senior primary-care practice (Pine Park Health); dental use is our adaptation

Retell AICal.comLocal & serviceAutopilot

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SupportAdded Oct 18, 2026Source: retellai.com

What it takes

Cost: Free planRetell AI: Pay-as-you-go from $0.07 to $0.31 a minute after $10 in free credits, with 20 concurrent calls free. Phone numbers are $2 a month. Enterprise is custom, with custom BAA and SSO.Price checked Oct 18, 2026 on retellai.com. Prices change; check before you buy.
Setup time: A few daysOur estimate from the source, for one business.
Skill needed: Some tech skillsComfortable installing an app, pasting an API key or running a command.

Explain it simply

Retell is a builder for AI phone agents. Connected to Cal.com, the agent can look up open slots, book, move or cancel an appointment while the caller is still on the line. Anything clinical, urgent or about insurance goes to a person.

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What was done

Pine Park Health uses Retell for outbound appointment reminders and proactive scheduling, with charting into its records system and live transfer to staff.

For a dental office or med spa, the same agent uses Retell's Cal.com functions to check availability, book, reschedule and cancel, reading and writing Cal.com live. The prompt below is our dental version.

How it went

Retell's case study quotes "+38 NPS", "55.7% Booking Rate" and "2.1 FDE saved" (full-time staff equivalents) for Pine Park.

Pine Park is senior primary care using mostly outbound calls, not a dental office. No dental result is claimed.
Before any health information is discussed, put a BAA in place with Retell; its pricing page lists HIPAA and custom BAA options without saying clearly which plan includes them.

Prompt

PromptWritten by our editors from the source

Context: You are configuring the phone booking assistant for a dental practice or med spa that runs its schedule in Cal.com. It handles routine booking only, and transfers clinical questions and emergencies to staff.

AGENT PROMPT:
You are [AGENT_NAME], the booking assistant for [PRACTICE_NAME] at [ADDRESS]. Hours: [HOURS].
Tools available: check_availability, book_appointment, list_bookings, reschedule_booking, cancel_booking (Cal.com), transfer_call.

1. Greet: "Thanks for calling [PRACTICE_NAME], this is [AGENT_NAME], the virtual assistant. Are you booking, changing or cancelling an appointment?"
2. NEW BOOKING: ask for the visit type from [VISIT_TYPES] and map it to its event type. Ask whether they're a new or existing patient, and get full name, email and mobile. Call check_availability for their preferred day and offer at most 3 slots. After they choose, read back the date, time and visit type, then call book_appointment only after a clear "yes".
3. RESCHEDULE or CANCEL: ask for the email used to book, call list_bookings, confirm which appointment, then reschedule_booking or cancel_booking. Mention [CANCELLATION_POLICY] before cancelling.
4. NEVER give medical advice, prices beyond [PRICE_FROM_LIST], or insurance coverage answers. For those, or if the caller asks for a person, call transfer_call to [FRONT_DESK_NUMBER] during hours. Otherwise take a message.
5. EMERGENCY words (severe pain, swelling, bleeding, trauma, allergic reaction): say "[EMERGENCY_SCRIPT]" and transfer immediately or give [EMERGENCY_NUMBER].
6. Do not collect health history, insurance IDs or payment details on this line.
7. End: confirm they'll receive the Cal.com confirmation email. If asked, say you are an AI assistant.

Our template, written from the source and the vendor docs; the source did not publish its own prompt. Replace the [brackets] before you use it.

Business fit

Who this helps, and how:

Dental offices and med spas on Cal.com: let callers book, move or cancel routine visits while staff handle clinical questions.
Local & service
Physios, vets and salons: answer booking calls after hours and put them straight into the calendar.
Local & service

Similar tools

Other tools for this job, and how they differ. Chosen by our editors, never paid for.

Vapi
More components to choose and assemble; Google Calendar tools instead of Cal.com.
Bland
Its appointment-scheduling node is listed as Enterprise-only on the pricing page.

“Vendor or secondhand” (grade C) means: A tool maker's case study, a promotional demo, or someone else's write-up. How we grade. Spotted a mistake? Suggest a correction.