CLEAN : Migrants: Scenes of anxiety at the train station of Budapest

The video transcript consists of a brief exchange where the speaker expresses uncertainty followed by a greeting.

What do you think the speaker means by 'I don't know'?

What emotions might the speaker be expressing with the phrase 'I don't know'?

What could be the reason behind the speaker's uncertainty in 'I don't know'?

How does the repetition in 'Hello hello' affect the tone of the conversation?

In what context do you think 'Hello hello' is used?