Generate an AI chat.js

/*
activation_example:!chatgpt hello there
regex:!chatgpt
flags:gmi
*/
var prompt = current.text.replace(/!chatgpt/gmi, "").trim().substring(0, 1000);
var chatReq = new sn_ws.RESTMessageV2();
chatReq.setEndpoint('https://api.openai.com/v1/chat/completions');
chatReq.setHttpMethod("POST");
chatReq.setRequestHeader("Authorization", "Bearer " + gs.getProperty("openai.key"));
chatReq.setRequestHeader('Content-Type', "application/json");
chatReq.setRequestHeader('User-Agent', "ServiceNow");
chatReq.setRequestHeader("Accept", "*/*");
var body = {
  "model": "gpt-3.5-turbo",
  "messages": [{"role": "user", "content": prompt +". You cannot ask for follow-up responses"}],
//  "max_tokens": 250
};
chatReq.setRequestBody(JSON.stringify(body));
var chatResponse = chatReq.execute();
gs.info(chatResponse.getBody());
var chatResponseBody = JSON.parse(chatResponse.getBody());

var show_tokens = false;
var token_cost = show_tokens ? "> tokens: " + chatResponseBody.usage.total_tokens + " ($" + (parseInt(chatResponseBody.usage.total_tokens) * 0.000002).toFixed(6) + ")\n" : "";

new x_snc_slackerbot.Slacker().send_chat(current, "> " + prompt.replace(/\n/gmi, ". ") + "\n" + token_cost + "\n" + chatResponseBody.choices[0].message.content, false);