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://issuu.com/trainticketbooking/docs/what_if_there_is_no_seat_number_on_amtrak_ticket