Here are the key steps to build a conversational bot with Amazon Lex:
1. Define intents and utterances - Intents represent the purpose of the user's request. You define example utterances for each intent.
2. Build slots - Slots are parameters that can be extracted from user input to pass to your Lambda function.
3. Configure prompts and responses - You define how the bot will respond to the user based on the intent and slot information.
4. Set up Lambda function integration - Your Lambda function receives the intent and slot information from Lex and can return a response.
5. Test and refine your bot - Test your bot with sample conversations and refine the intents, slots, prompts and responses based