Situation: You enter your friend María's apartment but you can't see her from the hallway where you are. You think she's in her room. You call up to her.
Semantic interpretation: Vocative.
Speaker: JMR
Utterance: ¡Nati! ¡Nati! ¿Estás en la pieza?
Translation: ¡Nati! ¡Nati! Are you in there?