Hi, I am developing a chatbot for food intolerances using the OpenAI API with the GPT-4 model. I am facing two main challenges: The bot response generation is slow, showing dots for about 30 seconds before responding. This can be frustrating for users, is there any way to speed up this process or make the response more progressive? I need to implement a Privacy Policy acceptance at the start of the chat. The idea is for the user to respond with a 'YES' or 'NO'. If he/she accepts, he/she will be able to continue; if not, the conversation will be terminated. I want to make sure that this question is asked only once and not repetitively. Additionally, is there an updated and simple tutorial for integrating the chatbot with WhatsApp?