[{'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: As a registered TripAdvisor member, you can modify your email subscription choices at any time on the Member Profile page. Whether registered as a TripAdvisor member or not, you also will be given the opportunity to unsubscribe from promotional messages in any such email we send. Please note that we reserve the right to send you other communications, including service announcements, administrative messages, and surveys relating either to your TripAdvisor account, without offering you the opportunity to opt out of receiving them."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]