This example demonstrates how to build a sophisticated voicemail detection bot using Pipecat and Daily's WebRTC infrastructure. The bot showcases real-time audio processing, natural language understanding, and automated call handling capabilities. It is designed to detect when the user is speaking to a voicemail system and automatically leave a message for the user, as well as handle live conversations with users. The bot uses GPT-4 for natural language processing and decision-making, and its intelligence comes from its carefully crafted system prompt. To build this bot, developers need to set up their environment with Python 3.10 or newer, install the required dependencies, and configure environment variables with their API credentials. They also need to enable dial-out capabilities through Daily's dashboard and purchase a phone number for international dial-out. Once set up, the bot can be tested by simulating voicemail systems or acting as a live caller, and it requires specific permissions to initiate dial-out calls. The code includes key components such as call termination, AI configuration, and bot behavior definition that make the voicemail detection bot work.