Ask HN: How to Build NLP+ai Chatbot with 30 Days from Scratch

You'll need a way to talk to your bot. I think the Telegram bot API is the easiest to use and it has bot-drawn UI buttons to simplify drudgery. Look into a connector for your language of choice.

The bot will need to understand what the user is asking. You could create a few dozen labeled examples of message text and the users intent, such as ('drive time to NYC' -> 'duration', 'thai food in seattle' -> 'recommendation'). You can then train a text classification system to infer the intent of new messages that have some common text.

SpaCy is an excellent natural language processing toolkit that can be used for this, but there are maaany options. [1]

The bot will need to be able to recognize different parts of user text in cases like "address of Eiffel Tower". You could use SpaCy's named entity recognition -- which can be retrained to understand other things -- to get started. [2]

In my experience you'll need a complex system to understand the state of an individual conversation and operate as a "control loop", but that's all on you.

[1] https://spacy.io/usage/training#textcat [2] https://spacy.io/usage/linguistic-features#named-entities