A 24-year-old woman with borderline personality disorder is in the interpersonal effectiveness module of her DBT skills group. She describes difficulty asking her employer for time off for medical appointments, fearing rejection and becoming either passive or explosive. Her therapist coaches her to Describe the situation, Express her feelings, Assert her needs, Reinforce the other person, stay Mindful, Appear confident, and Negotiate. Which DBT skill set is the therapist teaching?