[{'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 you have a privacy concern or a question for the Chief Privacy Officer of Microsoft, please contact us by using our Web form. We will respond to questions or concerns within 30 days."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]