Welcome to the Make community!
You’ll need to store the progress/state of the user’s chat so you know which question the user is on.
You’ll also need a router for each state (question).
Hope this helps! Let me know if there are any further questions or issues.
— @samliew
P.S.: Did you know, the concepts of about 70% of questions asked on this forum are already covered in the Make Academy. Investing some effort into it will save you lots of time and frustration using Make later!