A genie's purpous was to grant people's material desires, and the place humans always go for those is the mall. Genie transformed herself into a young dark-skinned teenager, cute but not excessively so. Then she transported herself to the mall without anyone noticing.
She sat at the cafe at the upper level and sucked a Turkish Delight smoothie as she studied the mall, its shops and it's customers. She would toy with someone, seeing how they'd react when confronted with their deepest desire.
Now who would be the lucky person?