[{'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: Do-Not-Track Signals and Similar Mechanisms. Some web browsers may transmit "do-not-track" signals to websites with which the browser communicates. Because of differences in how web browsers incorporate and activate this feature, it is not always clear whether users intend for these signals to be transmitted, or whether they even are aware of them. Participants in the leading Internet standards-setting organization that is addressing this issue are in the process of determining what, if anything, websites should do when they receive such signals. Expedia currently does not take action in response to these signals. If and when a final standard is established and accepted, we will reassess how to respond to these signals.'}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]