Give your bot the right voice
Your brand has a voice and tone, and your bot can be a natural extension of that same voice and tone. Look at the way your posts are written and use that same style when deciding what your bot will say. This consistency will create a seamless experience for your users, making them feel comfortable and at ease.

Let people know that a human is available
You might think that people don’t like chatbots, but that’s not true. In fact, 69% of consumers prefer communicating with chatbots compared to in-app support, most likely because people love speedy answers to their problems.

Avoid fully open-ended conversations
Bots can get confused, and open-ended conversations can lead to a poor experience for the user. If your bot doesn’t have highly-advanced language processing, then an open-ended question like “How can we help you today?” may or may not work. Frankly, it could wind up going in a direction you don’t even predict.

Conversation Tree
You’re going to build your bot its very own conversation tree.
Chatbots work best when given a concrete set of questions to answer. It takes a good amount of specificity and pre-planning to get this right. Otherwise the chatbot will deliver a less than believable experience and perhaps even give the wrong answer.

Research..
Consider what your bot is going to do and then research to find out how it will work.
For example, if the chatbot is going to answer product or customer service questions, then look through your data and find out what your most frequently asked questions are.