Conversational Agents enables customers to easily create AI agents that provide proactive, personalized self-service and take on a greater volume of inquiries, enabling customer service representatives to focus on more specialized work. Customers can leverage both generative AI and deterministic logic while building agents. 

Conversational Agents have two editions: 

• Flows (also known as Dialogflow CX) - Deterministic agents built with intents and flows using Natural Language Understanding (NLU)
• Playbooks: Generative Agents that can be built with natural language instructions and use building blocks such as::
• Playbooks
• Data Stores
• Generative fallbacks
• Generators

For Dialogflow ES pricing, please see this page