you listen to the audio and try to determine if you can either read or understand the audio. it's repeated twice, once formally and once casually, so good for listening practice, but also good for adding new words/phrases into your vocabulary since some of them might be familiar but maybe reconfigured in a way that you don't normally see in your practice.

this is probably only useful if you've started learning a very small amount of grammar, know hiragana well enough to make furigana useful, and have started memorizing enough kanji/vocab to make 'overheard train chatter' useful. probably, generously, something maybe 3-6 months into your japanese language journey, so not good for bootstrapping.