[{'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: We collect data about your usage on the App to also help analyse our page flow, measure promotional effectiveness and promote trust and safety. The analysis of this data can also help us provide information that is targeted to your interests. If you choose to buy on the App, we collect information about your buying behaviour to customize user experience on the App."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]