Voice-Activated Auto-Dialer Integration

I need a small, self-contained kit that listens for a spoken trigger phrase, seizes my existing internet-based phone line, automatically dials a list of mobile and land-line numbers, plays a pre-recorded announcement, then transfers the caller straight to a live operator or secondary number. After the transfer the announcement must stop and full duplex conversation must be possible.

The hardware and software should work reliably on standard VoIP/SIP services and be simple for me to re-record the message or update the dial list. A solid-state relay output is also required so that, once the outbound call is answered, I can switch an external device.

Typical tools that make sense here include Asterisk/FreePBX, Raspberry Pi, ESP32 voice modules, Twilio, or similar SIP gateways—but I am open to your preferred stack as long as it delivers hands-free voice activation, flawless call bridging, and easy configuration.

Please give me:
• A complete parts list or ready-made board recommendation
• All code, dial-plan, and configuration files
• Clear setup instructions that a technically minded user can follow without specialist test gear

I will test by issuing the voice command in a normal office environment; the system must dial, play the message audibly, switch the relay, and connect me to my chosen live number without manual intervention.