Takako ni kaeri ni gyūnyū o katte-kuru yō ni itta-n-da kedo. I asked Takako to buy milk on her way home.
Situation 1: Little Mariko and her mother are at home. Mariko takes out some milk from the refrigerator and then talks to her mother.
まり子： お母さん、牛乳がもうなくなるよ。