Language Proficiency and Translation Request

Inquiry about language: The speaker expresses curiosity regarding the listener's proficiency in Serbian.
Context of inquiry: The speaker is currently engaged in learning material that is written in Serbian.
Request for notes: The speaker requests for academic notes or assistance to be provided in Serbian rather than English.
Implication of usefulness: The speaker emphasizes that failure to provide the requested translation or notes in Serbian would render the listener 'useless' in the context of their current needs.

Direct request for translation: The speaker directly asks for the translation of material from English to Serbian, indicating urgency in their need for assistance.
Emotion expressed: There is a tone of frustration or disappointment implied in the phrasing 'I'm sorry' in connection with the inability to receive help in the desired language.