The thrill and excitement of betting at the racetrack or in a casino is dependent on knowing that gaming services employees are following the house regulations. Employees in the gaming services industry must be honest, have integrity, and be able to remain calm while serving customers in the sometimes frenetic environment of gambling venues. Gaming managers and supervisors monitor and direct gaming operations and personnel. They move around the tables and slot machines to ensure that everything runs well. They explain house rules, double-check payouts, and summon security personnel if needed. Table games such as craps, blackjack, and roulette are operated by gaming dealers. Dealers explain the rules of the game, announce each player's actions, and cue each player's turn. Dealers must also compute and pay out winning bets, as well as collect when players lose. Writers and operators of gaming and sports books accept bets on sporting events and operate games such as bingo and keno. They also check tickets or winners and distribute winnings. Gaming cage employees are in charge of converting customers' cash for the chips used to play, and vice versa. Because most gaming venues are open 24 hours a day, it is common in these industries to work nights, weekends, and holidays. Most gaming occupations require a high school diploma, however certain gaming managers may demand a college degree. All professions require customer service skills.