# Overview (Dialogflow)

Actions on Google lets you extend the functionality of Google Assistant with
***Actions***. Actions let users get things done through a conversational
interface that can range from a quick command to turn on some lights or a
longer conversation, such as playing a trivia game.

Dialogflow is a conversational platform that lets you design and build
Actions by wrapping the functionality of the [Actions SDK](https://developers.google.com/assistant/df-asdk/actions-sdk)
and providing additional features such as an easy-to-use IDE, natural language
understanding (NLU), machine learning, and more.

To extend Google Assistant, you build an Action with the following steps.

## Design your Conversation

Before developing, you should design your conversation, or the user interface
for your Action. The conversation describes how users invoke your Action, the
valid things that they can say to your Action, and how your Action responds to
them.

[Learn more](https://developers.google.com/assistant/df-asdk/design)

## Create an Actions on Google developer project and Dialogflow Agent

Go to the [Actions console](https://console.actions.google.com/) and create a developer project.
The project lets you define metadata about your Action and manage and track
your Action through the approval process. Once you have a project, you can
create a Dialogflow agent that defines all your Actions.

[Learn more](https://developers.google.com/assistant/df-asdk/dialogflow/project-agent)

## Define Actions

You define Actions in your Dialogflow agent with intents that define entry
points into your Action's functionality. For example, say you wanted to build an
Action that could purchase some goods, check the status of orders, and to show
some daily deals. You can define intents that are triggered by saying:

- *"Ok Google, talk to My Favorite Shoe Store to purchase some shoes"*
- *"Ok Google, talk to My Favorite Shoe Store to check on my order"*
- *"Ok Google, talk to My Favorite Shoe Store to show me today's deals"*

[Learn more](https://developers.google.com/assistant/df-asdk/dialogflow/define-actions)

## Build and deploy fulfillment

When an Action in your Action is invoked, it calls fulfillment to start a
conversation with users to fulfill the Action.

To create your conversation, you define intents in Dialogflow to create your
conversation's grammar, or the things users can actually say to your Action.
When users actually say something to trigger an intent, your fulfillment is
called and returns a response back to the user.

This back and forth request and response happens repeatedly until your
fulfillment has enough information to complete the task.

[Learn more](https://developers.google.com/assistant/df-asdk/dialogflow/fulfillment)

## Submit your Action for approval and make it available to users

![](https://developers.google.com/static/assistant/actions/images/aog-project-info.png)

[Learn more](https://developers.google.com/assistant/df-asdk/submit-project)