We explore the potential of ChatGPT to generate conversations focused on self-care strategies for African-American patients with heart failure, a domain with limited specialized datasets. To simulate patient-health educator dialogues, we employed four prompting strategies: aspects, African American Vernacular English, Social Determinants of Health (SDOH), and SDOH-informed reasoning. Conversations were generated across key self-care aspects— food, exercise, and fluid intake—with varying turn lengths and incorporated patient-specific SDOH attributes such as age, gender, neighborhood, and socioeconomic status. Our findings show that effective prompt design is essential. While incorporating SDOH and reasoning improves dialogue quality, ChatGPT still lacks the empathy and engagement needed for meaningful healthcare communication.