A ticket vendor
Box office clerk
Cashier, box office cashier, box office attendant.
conductor
what do you call a person who sells tobacco
They might be a ticketing agent, an office clerk, or a scalper.
You would call it a ticket office or a ticket broker.
They are a floristA Florist is a person who sells flowers.
An author is a person who writes and sells books.
The person who sells drink is known as sellsmen
A bookseller