function-call-sample.json

{
  "model": "gpt-3.5-turbo-0613",
  "messages": [
    {
      "role": "user",
      "content": "1. give a good 'tip' in 10-15 words.\n2. generate a name for a science fiction universe"
    }
  ],
  "functions": [
    {
      "name": "get_great_message",
      "description": "Get the good tip & the write name",
      "parameters": {
        "type": "object",
        "properties": {
          "tip": {
            "type": "string",
            "description": "a good tip. e.g. Expect the Unexpected"
          },
          "writer": {
            "type": "string",
            "description": "a name of writer. e.g. Joey, Ramone, Michael"
          }
        },
        "required": [
          "tip",
          "writer"
        ]
      }
    }
  ],
  "function_call": { "name": "get_great_message" }
}

response:

{

  "model": "gpt-3.5-turbo-0613",
  "choices": [
    {
      "index": 0,
      "message": {
        "role": "assistant",
        "content": null,
        "function_call": {
          "name": "get_great_message",
          "arguments": "{\n  \"tip\": \"Embrace the unknown and discover endless possibilities.\",\n  \"writer\": \"Galaxy Explorer\"\n}"
        }
      },
      "finish_reason": "stop"
    }
  ]
}