Thematic Function of Dialogue in Drama

In a pivotal scene from a contemporary play, two characters engage in a heated dialogue that reveals their contrasting views on identity and belonging. Character A asserts their belief in the importance of individualism, stating, 'We must forge our own paths, unburdened by the expectations of society.' In response, Character B argues for the value of community, replying, 'But without a community, who are we? We lose ourselves in isolation.'

Based on this exchange, what function does the dialogue primarily serve in the context of the play?