Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
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' 'Arbitration' 'Content removal' 'Jurisdiction'
 'Choice of law' 'Unilateral termination' 'Limitation of liability'
 'Contract by using' 'None'].