The missing children

Question: There is a round house. 3 people are in it (not including the children) The owner of the house was looking for his children. He asked the chef, "Did you see my children?" The chef said, "No. I was making food for myself." The owner asked the other person in the house, which was the maid. He said, "Did you see my children?" The maid said, "No. I was sweeping the floor in the long hallway." Who had the children?