[{'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: to allow you to participate in surveys about our products and services. If you participate in a survey, we may request certain personally identifiable information from you. Participation in these surveys is voluntary and you therefore have a choice whether or not to disclose this information. We use may use a third party service provider to conduct these surveys and such third party service provider will be prohibited from using your personally identifiable information for any other purpose."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]