Build a Chatbot, Voice and Phone Agent with Voiceflow, Google Calendar and RAG

Voiceflow is a no-code platform that allows you to design, prototype, and deploy conversational assistants across multiple channels—such as chat, voice, and phone—with advanced logic and natural language understanding. It supports integration with APIs, webhooks, and even tools like Twilio for phone agents. It's perfect for building customer support agents, voice bots, or intelligent assistants. This workflow connects n8n and Voiceflow with tools like Google Calendar, Qdrant (vector database), OpenAI, and an order tracking API to power a smart, multi-channel conversational agent. There are 3 main webhook endpoints in n8n that Voiceflow interacts with: n8norder – receives user input related t

Help me set up the n8n workflow "Build a Chatbot, Voice and Phone Agent with Voiceflow, Google Calendar and RAG" (https://n8n.io/workflows/3657). It uses: HTTP Request, Google Drive, Google Calendar, AI Agent, Basic LLM Chain, Embeddings OpenAI, OpenAI Chat Model, Structured Output Parser, Token Splitter, Default Data Loader, Qdrant Vector Store, Vector Store Question Answer Tool. Import the template JSON into my n8n instance, list every credential I need to create, and walk me through testing it.