[{'role': 'user', 'content': "Analyze the following clause from a privacy policy and determine if it's fair or unfair. Also identify any privacy practices mentioned: b. How to indicate your consent and opt-out You may indicate your consent in a number of ways, including: (i) ticking a box to indicate your consent when providing us with your Personal Data through our Services or a form (including enrolling in Promotions); or ticking a box to indicate your consent when registering with us or creating an account with us. You may opt-out from receiving marketing communications at any time, free of charge, through the methods described in the Set Your Communications Preferences section."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]