Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
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tripadvisor and its affiliates will not interfere with reservations arbitrarily , but we reserve the right to cancel or not process a reservation because of certain extenuating circumstances , such as when a reservation is no longer available or when we have reasonable cause to suspect that a reservation request may be fraudulent . 

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. OPTIONS: ["Unilateral change", "Unilateral termination", "Contract by using", "Choice of law", "Arbitration", "None", "Jurisdiction", "Content removal", "Limitation of liability"].