hi Kings ! Thanks That's what I have tried, returning as a test :

const response = {
                    messageResponse: {
                        type: 'assistant',
                        assistant: {
                            firstMessage: "Hey, how are you today?",
                            prompt: "You're, a voice assistant helping  log work data. Keep it short, polite, and efficient."
                        }
                    }
                };

But it's no working, can you point me out to a demo or an example ? Thank you