[{'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: Functionality We use such cookies to perform and improve the functions of our services. In particular, we use these cookies to help us collect information about how our users are interacting with WeChat - for example, your most recent searches and the profiles that you most frequently visit on WeChat."}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Identifier_Cookie_or_similar_Tech_1stParty.'}]