In this blog post, we created a custom Lex slot type (MovieGenre), configured intent slots, defined sample utterances that use our predefined slots, and tested the bot's flow. We identified case sensitivity issues with certain built-in Lex slots, which add new index requirements on our database. The test results show that the bot recognizes sentences as valid kick-off utterances and prompts for required slot values accordingly. The utterance patterns also demonstrate the importance of considering case sensitivity when using certain Lex built-in slot types.