How to Build a Chatbot Using Natural Language Processing

Are you tired of answering the same questions over and over again? Do you want to provide your customers with a better experience? Then it's time to build a chatbot using natural language processing!

Chatbots are becoming increasingly popular in the business world, and for good reason. They can help automate customer service, provide 24/7 support, and even increase sales. But building a chatbot can be intimidating, especially if you're not familiar with natural language processing (NLP).

In this article, we'll walk you through the steps of building a chatbot using NLP. We'll cover everything from choosing a platform to training your chatbot to understand natural language. So let's get started!

Step 1: Choose a Platform

The first step in building a chatbot is choosing a platform. There are many chatbot platforms available, each with its own strengths and weaknesses. Some popular options include:

Each platform has its own pricing model, so be sure to choose one that fits your budget. You should also consider the platform's features, such as its ability to handle multiple languages or integrate with other services.

For this article, we'll be using Dialogflow, as it's a popular and user-friendly platform that offers a free tier.

Step 2: Define Your Chatbot's Purpose

Before you start building your chatbot, you need to define its purpose. What do you want your chatbot to do? What questions should it be able to answer? What tasks should it be able to perform?

Defining your chatbot's purpose will help you create a more focused and effective chatbot. It will also help you determine what kind of training data you need to collect.

For example, if you're building a chatbot for a restaurant, you might want it to be able to answer questions about the menu, take reservations, and provide directions. If you're building a chatbot for a retail store, you might want it to be able to answer questions about products, provide recommendations, and process orders.

Step 3: Collect Training Data

Once you've defined your chatbot's purpose, you need to collect training data. Training data is the information your chatbot will use to understand natural language and respond to user queries.

There are two types of training data: intents and entities. Intents are the actions or goals that users want to achieve, while entities are the specific pieces of information that users provide.

For example, if a user asks "What's on the menu?", the intent is to get information about the menu, while the entity is "menu".

To collect training data, you can use a variety of methods, such as:

When collecting training data, it's important to include a variety of examples for each intent and entity. This will help your chatbot understand different ways users might phrase their queries.

Step 4: Build Your Chatbot

Now it's time to build your chatbot! In Dialogflow, you can create a new agent and start adding intents and entities.

To create an intent, you'll need to provide a name and a list of training phrases. These training phrases should include different ways users might phrase their queries. You can also add entities to your intents, which will help your chatbot extract specific pieces of information from user queries.

Once you've created your intents and entities, you can start adding responses. These responses should be tailored to each intent and provide helpful information to the user.

For example, if a user asks "What's on the menu?", your chatbot might respond with a list of menu items and prices.

Step 5: Test Your Chatbot

After you've built your chatbot, it's important to test it thoroughly. This will help you identify any issues or gaps in your training data.

In Dialogflow, you can test your chatbot using the "Try it now" feature. This feature allows you to enter sample user queries and see how your chatbot responds.

When testing your chatbot, be sure to try different variations of user queries. This will help you identify any gaps in your training data and improve your chatbot's accuracy.

Step 6: Deploy Your Chatbot

Once you're satisfied with your chatbot's performance, it's time to deploy it. In Dialogflow, you can deploy your chatbot to a variety of platforms, such as Facebook Messenger, Slack, or your own website.

When deploying your chatbot, be sure to provide clear instructions for users on how to interact with it. You should also monitor your chatbot's performance and make adjustments as needed.


Building a chatbot using natural language processing can seem daunting, but it's a valuable tool for businesses looking to improve customer service and increase sales. By following these steps, you can create a chatbot that understands natural language and provides helpful responses to user queries.

Remember to choose a platform that fits your budget and needs, define your chatbot's purpose, collect training data, build your chatbot, test it thoroughly, and deploy it to your desired platform. With a little patience and persistence, you can build a chatbot that provides a better experience for your customers.

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Written by AI researcher, Haskell Ruska, PhD ( Scientific Journal of AI 2023, Peer Reviewed