Not Register scenario

Joe has not booked any class online. He is aware that yoga takes place at 7pm on a Wednesday. He makes his way to the gym and informs the receptionist that he would like to participate in the class. The receptionist checks the availability of the class and informs him that there are free spots left. She collects the charge of four euro from him exactly and requests his Student ID number, name and telephone number. The receptionist enters this into the computer so as to keep a track of information and to contact Joe as a means of marketing future classes to him.