travel agent
Box office clerk
conductor
Ticket seller.
A ticket vendor is a person who sells tickets -.-
You would call it a ticket office or a ticket broker.
An author is a person who writes and sells books.
The person who sells drink is known as sellsmen
baker
A person who sells books is commonly referred to as a bookseller or a book vendor.
You call a person who sells flowers a (Florist)
One of the major ticket companies that sells Columbus Blue Jackets tickets is ticketmaster. Also a person could visit Stubhub to obtain tickets to one of their games.