Sachiko: Here we are at the Yamanote line. It's one of the busiest train lines in Tokyo.

Emma: Wow, there are so many people! And the trains come so often.

Sachiko: Yes, the trains are operated frequently to accommodate the large number of passengers. It’s impressive, isn't it?

Emma: Absolutely! It’s so different from back home. Being surrounded by so many people is something new to me.

Sachiko: Don't worry, you'll get used to it. The system is designed to be efficient and safe for everyone.