[{'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: Functional and performance You make choices that make your experience with our websites and applications better for you and allow us to understand how our end users move around, use and interact with our websites and applications."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]