{
  "name": "place_order",
  "description": "Place an order when user has confirmed the pizza type and quantity.",
  "parameters": {
    "type": "object",
    "properties": {
      "pizza_type": {
        "type": "string",
        "description": "The pizza type."
      },
      "quantity": {
        "type": "number",
        "description": "quantity of pizza."
      },
      "unit_price": {
        "type": "number",
        "description": "unit price"
      }
    },
    "required": [ "pizza_type", "quantity", "unit_price" ]
  }
}