Descriptions:
Stephanie Nyarko demonstrates how to build a fully automated after-hours phone receptionist by connecting Retell AI and Microsoft Copilot Studio. When a customer calls outside business hours, the AI voice agent answers, collects the caller’s name, reason for calling, and callback number, then sends the full call transcript into a Power Automate workflow. From there, a Copilot Studio AI model extracts structured fields—contact name, call reason, urgency classification, and phone number—and logs them into an Excel Online spreadsheet so business owners start each morning with a clean, actionable call log instead of a voicemail inbox.
The tutorial covers the full technical chain: configuring the Webhook trigger in Copilot Studio, using a Compose node to isolate the transcript from the incoming payload, running the transcript through a language model with a defined JSON output schema, parsing that JSON with a Parse JSON node, and writing rows to a spreadsheet using the Add a Row Into a Table action. Nyarko also shows how to extend the workflow to send email alerts on urgent calls.
This is a practical small-business automation pattern applicable to any service business that receives after-hours inquiries, combining Retell AI’s voice agent infrastructure with Microsoft’s low-code Power Platform stack.
📺 Source: Stephanie Nyarko · Published December 23, 2025
🏷️ Format: Hands On Build
