[{'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: Promotional Communications You may opt out of receiving promotional messages from us by following the instructions in those messages. If you opt out, we may still send you non-promotional communications, such as those about your account, about Services you have requested, or our ongoing business relations."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]