Idea of Two Tickets Icon
This is two movie or concert tickets resting on top of each other. They are tilted slightly to the right instead of standing straight up. Both tickets have a perforated portion at the top of them that can be torn off. At both ends of both tickets that is a small circular portion cut out of the ticket.
This page shows the different variations of the Two Tickets from an Icons8 icon pack. Feel free to resize and recolor the icon, and then download the icon in PNG format for free.