Show an emotion without naming it

Write a 400-word original fictional dialogue between [TWO CHARACTERS] about [PRACTICAL TASK]. The underlying emotion is [EMOTION], but neither narration nor dialogue may name it or use close synonyms. Convey it through interruptions, a repeated object action, and one moment of restraint. Then provide a short annotation identifying those devices without claiming there is only one valid interpretation. Check the banned word family, keep the task understandable, and make both speakers' goals distinct.