[{'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: CortanaCortanamaincortanamodule Summary Cortana is your personal assistant. Cortana works best when you sign in and let her use data from your device, your personal Microsoft account, other Microsoft services, and third-party services you choose to connect. If you choose not to sign into Cortana, you can still chat with Cortana and use Cortana to help you search the web and your device. But if you don't sign in, your experiences will be more limited and they will not be personalized."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]