[{'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: Assent By using this site, you signify your assent to our Online Privacy Policy. If you do not agree to this Privacy Policy, please do not use this site. We reserve the right to make changes to this Privacy Policy. Please check back from time to time to ensure that you are aware of these changes. Your continued use of this site will signify your acceptance of these changes. If you do not agree with any terms or conditions described in this Privacy Policy or the Terms of Use, we would request you to exit from the site."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]