If there’s no seat number on your Amtrak ticket, don’t worry! This usually means you have an unreserved ticket. Amtrak offers two types of services: reserved and unreserved. Reserved tickets come with an assigned seat, while unreserved tickets allow you to choose any open seat once you’re on the train. https://medium.com/@nishantindivedic/what-if-there-is-no-seat-number-on-amtrak-ticket-a6456272093d