answer: #Person1# takes #Person2# to the airport. After arriving on time, #Person2# asks #Person1# to keep the change and give #Person2# a receipt.
documents: #Person1#: Where is that? 
  #Person2#: Take me to the airport, please. 
  #Person1#: (while driving)Are you in a hurry? 
  #Person2#: I have to be there before 17 00. 
  #Person1#: We'll make it except a jam. You know it's rush hour. 
  #Person2#: There's an extra ten in it for you if you can get me there on time. 
  #Person1#: I'll do my best. 
  #Person2#: (After arriving on time) Here's twenty dollars. 
  #Person1#: Do you have small bills? 
  #Person2#: No. If you can't break it, keep the change. But can you give me a receipt? 
  #Person1#: Here is your receipt. Thank you.