Lunch Discussion on Preferences and Frequencies

Shiori: How often do you eat Japanese food, Robert?
Robert: About twice a week. How about you, Shiori? How often do you try American food?
Shiori: I try to eat it once a week. How many types of Japanese dishes do you know?
Robert: I know at least five types. How much do you usually spend on lunch?
Shiori: Usually around 1,000 yen. And you, Robert?
Robert: Around 20 dollars, depending on the place. How old were you when you first tried sushi?
Shiori: I was five years old. How tall is the tallest building you've seen in Japan?
Robert: It was about 300 meters tall. How about in America?