Retrieving user data when we deploy it to the my web portal

Rasa bot is awesome when it comes to detecting intent and entities, but how we can make conversations from the dual side? I want to deploy it to my portal, whenever a user comes and logged into my portal rasa bot should greet him like “Hi Kiran, how are you?”, data should be taken from local storage or session storage and I need it to reflect on the bot. please help me out… If my bot is not able to address user queries based on his data it may not be a useful product…so I am looking for your support. thanks in advance Kiran