Questions answering methods other than Chatbots

Hi there,

I'm working on my thesis, where I have to build a smart question answering App.

It should be something similar to what you have here.

In our App customers ask questions and give feedbacks. We want to find a way to answer the similar asked questions that are not 100% the same but have the same answer automatically.

I want to use Machine Learning (Or maybe another more efficient way if existed) so the questions which we already have answers to in the database will be answered automatically.

I want to see if there is any other, maybe easier or maybe more efficient way than Chatbots