I want to create an automated customer journey which will send out an email containing a survey link. I can create the segment for the survey audience (to be sent to customer day after travel). In order to prevent over surveying I want to create a suppression segment which will prevent customers who have travelled more than once in a 60 day period from receiving the survey email each time they travel. I know how to add a static suppression segment to a customer journey. How do I create a dynamic suppression segment?