[{'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: Personal identification information When you install our games and apps, we may collect and record information to enhance the experience and benefits of using our Services. We will collect personal public information from Users only if they voluntarily submit such information to us through our Services. Users can always refuse to supply personal information. In said case, Users should avoid using social network features such as Sharing and Friend invite requests."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]