Create a welcoming service-desk vignette in a fictional public library. Preserve the staff member on screen right, visitor on screen left, modest uniforms, desk height, hearing-loop symbol placeholder area, and open path from the references. No real patron records or readable screens.

0–4 seconds: medium two-shot. The staff member makes eye contact and says in English, “Welcome. How can I help today?” The visitor listens with no lip movement. 4–8 seconds: the visitor answers in Mandarin, “我想办理一张借阅证。” The staff member listens and nods once. 8–12 seconds: the staff member gestures toward a blank paper form and replies in Mandarin, “好的，我来为您说明步骤。” End before personal details are requested.

Keep exact speaker-to-voice ownership, natural pronunciation, calm facial motion, respectful personal distance, eyelines, and screen direction. Sound intent: intelligible dialogue with quiet library ambience, no music. Avoid subtitles baked into the image, voice swapping, private data, invented eligibility claims, logos, background face duplication, or watermark.