[{'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: If a user sends us an enquiry or subscribes to special services, such as a newsletter, we will ask it for the information that we need in order to deal with its request. This information is used on a voluntary basis and only to the extent required or previously approved by the user (see also Item 11)."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]