I managed to make a fallback (by making number of retries to 0 and adding a expression) so when a user doesnt click on one of the predermined buttons (eg. paid ads and SEO as shown below) and just says something else it goes to another node. Now, I want it so that in that node it reads the user message (which in most cases is a question like shown in the image below) and check the knowledge base and give an answer. How would I go by doing that?