title: How can I show a dynamic welcome message using Amazon lex bot?
body: <p>I am developing a chatbot using Amazon lex. It is going to be integrated with facebook messenger in a facebook page. When a user opens the bot for the first time, it says nothing. It listens to user intents. I would like the bot to initiate a conversation and provide the user with a few options(configured in a mysql database in the backend). What is the best way to do this?</p>