answer: #Person2# pays for a single fare with #Person1#'s assistance.
documents: #Person1#: Hello, sir. How many in your party? 
  #Person2#: Just myself. What is the rate? 
  #Person1#: OK, a single fare is $50 per right. 
  #Person2#: Fine. Do I have to show my passport? 
  #Person1#: No, it's not necessary. But you have to fill out this form. 
  #Person2#: Sure.