Confused between conversational and text2text generation models

Hi folks,

This is my first post here, and I am a newbie in this field. If this is not the right place for this question, please accept my apologies and redirect me to the correct one.

I have two queries.

  1. I am confused between the usage of text2text generation models and conversational models, because in both cases we give some text and receive some text.
  2. My use case is, I have some web pages. I want to train a chatbot on these web pages so that it can provide answers related to those web pages like ChatGPT. I am not sure which type of model I should use text2text generation models or conversational models. Please provide some guidance.