# Các Activity

- [Timers](/english/flows/cac-activity/timers.md)
- [Cron](/english/flows/cac-activity/timers/cron.md)
- [Timer](/english/flows/cac-activity/timers/timer.md)
- [Start at](/english/flows/cac-activity/timers/start-at.md)
- [Clear timer](/english/flows/cac-activity/timers/clear-timer.md)
- [OpenAI](/english/flows/cac-activity/openai.md)
- [Check message sentiment](/english/flows/cac-activity/openai/check-message-sentiment.md): Check sentiment of a input and return: positive, neutral, negative
- [Haravan](/english/flows/cac-activity/haravan.md)
- [Check customer orders in timeframe](/english/flows/cac-activity/haravan/check-customer-orders-in-timeframe.md): Verify whether the customer has any orders within the specified time range
- [Thông dụng](/english/flows/cac-activity/thong-dung.md)
- [Sending a SMS message](/english/flows/cac-activity/thong-dung/sending-a-sms-message.md): Send a message to a phone number
- [Create coupon](/english/flows/cac-activity/thong-dung/create-coupon.md)