To book a talent or celebrity for a show, this task cannot be done by yourself if you are not someone whose task is particularly to do so in the entertainment industry. The one you need to ask for a help to do this task is a talent booker. There are some steps a talent booker has to go trough in order to book or hire a celebrity and below will be an explanation discussing one of them.
One of the steps is to give accurate information about the person who is going to hire the celebrity. The purpose of this step is to give the celebrity assurance that information about the fee he or she charge to perform at or come to a show or event will not be leaked to the public. It is confidential that it cannot be given to just anyone. Hence, to be able to get the celebrity you want, it is better to use the merit of a celebrity producer who can be trusted not only by you but also the celebrity.