Who made the order?

SIOMAI. One evening not long ago, a restaurant in the city delivered three dozens siomai and a case of softdrinks to the office of a printing company whose manager purportedly made the order as he was celebrating his birthday.

NO BIRTHDAY. An office personnel said the boss was not celebrating his birthday and he could not have made the order as he was on a business trip in Hong Kong.Besides there were only three workers working overtime that night. Someone must have played a joke on the boss. The office chief that night said two years ago a restaurant also delivered to the office six fried chickens for the boss’ birthday. He was not celebrating and did not order any fried chicken.