/balance command + limit of dialog context + user state move to user data

README.md

@@ -9,10 +9,16 @@ This repo is ChatGPT re-created with GPT-3.5 LLM as Telegram Bot. **And it works
 - Low latency replies (it usually takes about 3-5 seconds) 
 - No request limits
 - Code highlighting
-- Different chat modes (👩🏼‍🎓 Assistant, 👩🏼‍💻 Code Assistant, 🎬 Movie Expert)
-- `/retry` command to regenerate last bot answer
-- Control of allowed Telegram users
-- *Next up*: warn user that the size of the context is close to the maximum
+- Different chat modes: 👩🏼‍🎓 Assistant, 👩🏼‍💻 Code Assistant, 🎬 Movie Expert. More soon
+- List of allowed Telegram users
+- Track $ balance spent on OpenAI API
+
+## Bot commands
+- `/retry` – Regenerate last bot answer
+- `/new` – Start new dialog
+- `/mode` – Select chat mode
+- `/balance` – Show balance
+- `/help` – Show help
 
 ## Setup
 1. Get your [OpenAI API](https://openai.com/api/) key