Every country has its own peculiar dining customs. Americans feel that the first rule of being a polite guest is to be on time. If a person is invited to dinner at six-thirty, the hostess expects him to be there at six-thirty or not more than a few minutes after. Because she usually does the cooking, she times the meal so that the hot rolls and the coffee and meat will be at their best at the time the guests come. If they are late, the food will not be so good, and the hostess will be disappointed. When the guest cannot come on time, he calls his host or hostess on the telephone, gives the reason, and tells at what time he can come. Depending on the situation, guests sometimes bring a box of candy or some flowers to give to the hostess as a sign of appreciation.