You are learning introducing yourself: you will read the scene it happens in, learn 10 words and phrases, take apart the pattern behind them (hajimemashite + self-introduction structure), hear them in a conversation, rehearse them, and finish by saying one thing out loud to be graded.
A networking dinner in Shibuya, or a language exchange meetup in a Shimokitazawa café. Someone turns and asks: "Dochira kara desu ka?" — Where are you from?
Language exchange meetups happen every week across Tokyo — cafés in Shimokitazawa, bars in Nakameguro, community centers in Shibuya. Japanese speakers who want to practice English meet people who want to practice Japanese. Both sides learn. Both sides feel slightly terrified at first.
A woman in her thirties sits across the table. She bows slightly. 「はじめまして。田中と申します。よろしくお願いします。」 — Hajimemashite. Tanaka to mōshimasu. Yoroshiku onegaishimasu.
The stranger responds: 「はじめまして。[名前]と申します。アメリカから来ました。よろしくお願いします。」 A pause. Then: 「日本語を勉強しています。まだ上手じゃないですが、頑張ります！」
She smiles. This is exactly what she hoped to hear — someone making an honest effort. 「日本語が上手ですよ！」 — Your Japanese is good! It's not true yet, but it's kind. And kindness is how Tokyo language exchanges work.