Most of chatbots cloud platforms, including dialogflow, are business-oriented and task-oriented. This restricts the chatbot to only being responsive to users queries. Only Microsoft Bot Framework provides proactive messages which can be sent based on a specific event. The use of the Messenger API provides a solution where cron jobs are meant to send messages using the API at users specified times. The ability to perform tests using a local server with a public IP address is useful for development and testing.