Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
when you book international travel reservations with third-party suppliers or plan international trips using this website , you are responsible for ensuring that you meet all foreign entry requirements and that your travel documents , including passports and visas , are in order . 

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