Tier-1 customer support is mostly the same five conversations on repeat: where's my order, can I change my address, can I get a refund, when does this ship, can I talk to a human. They're predictable, they're high-volume, and they don't need a person—they need a voice agent that can actually look things up. This tutorial walks you through building one. By the end, you'll have a Python voice agent that answers calls, listens for an order ID or email, calls into your backend to check the status, and reads the result back to the customer in real time. When something goes off-script, it transfers to a human with the full conversation context attached. We're using AssemblyAI's Voice Agent API—one WebSocket that handles the speech understanding, LLM reasoning, voice generation, turn detection, and tool calling in a single connection. Total time to a working prototype: about an afternoon. Why most support voice agents fail Before we build, it's worth knowing where these things break.…