The person who wants the snacks will have an gadget next to then with the makeblock app open next to then. After they click the green flag, they the sprite will ask them if they want snacks or not, if they say yes, the mbot will follow the line to the room where the person is. After the mbot reaches the room, the sprite will ask if the person wants chocolates or gummies. After saying either one, the container on the mbot will automatically open for 5 seconds. After this, it will close automatically and go out of the room.