Custom user input

Hello,

I am trying to build a bot for post sales services. Is it possible to handle arbitrary inputs like “invoice no”, “date”, ‘comments’ and save the values somewhere. I was able to store values using actions but could not handle random user inputs which may not have any intent associated with it. I have also tried my luck with regex, but unfortunately being a starter I was not able to configure it properly

Regards, Shaisal