A Dragon

As my parents drove away from our house on their way to the airport where they will fly to China, my mom called, Te compro un kimono? (“Shall I buy you a kimono?”).

I hesitated. Te compro un kimono? she repeated.

"If there's one you think I would like!" I answered.

My dad then called out the window, Te traigo un dragon? (“Shall I bring you a dragon?”).

"YES!" I instantly replied.

How is that a father knows precisely what his child would like?