{
  "state": "I need a copy of the invoice for order ORD-2048 to attach to my expense report. Please retrieve the document.",
  "questions": {
    "decision": {
      "type": "choice",
      "instructions": "Select the read-only function needed to answer the user. Choose no_tool if none applies.",
      "criteria": {
        "get_order_status": "Look up the shipment status and estimated delivery of an order",
        "get_invoice": "Retrieve the invoice document for an order",
        "search_help_center": "Search product documentation and troubleshooting guides",
        "list_transactions": "List the recorded payments for a customer account",
        "no_tool": "No available function is appropriate"
      }
    }
  }
}