Ask a human for help when the AI doesn't know the answer

This is a workflow that tries to answer user queries using the standard GPT-4 model. If it can't answer, it sends a message to Slack to ask for human help. It prompts the user to supply an email address. This workflow is used in Advanced AI examples | Ask a human in the documentation. To use this workflow: Load it into your n8n instance. Add your credentials as prompted by the notes. Configure the Slack node to use your Slack details, or swap out Slack for a different service.

Help me set up the n8n workflow "Ask a human for help when the AI doesn't know the answer" (https://n8n.io/workflows/2095). It uses: Slack, Code, AI Agent, OpenAI Chat Model, Simple Memory, Call n8n Workflow Tool. Import the template JSON into my n8n instance, list every credential I need to create, and walk me through testing it.