[{'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: Waiver, Severability & Assignment Dropbox's failure to enforce a provision is not a waiver of its right to do so later. If a provision is found unenforceable, the remaining provisions of the Terms will remain in full effect and an enforceable term will be substituted reflecting our intent as closely as possible. You may not assign any of your rights under these Terms, and any such attempt will be void. Dropbox may assign its rights to any of its affiliates or subsidiaries, or to any successor in interest of any business associated with the Services."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]