Sentence 1: The cashier was rude to her customer. 
 Sentence 3: The boss warned the cashier to not be rude again 
 Sentence 4:  The customer filed another complaint the next week 
 Sentence 5:  The cashier was fired 
 Option 1: The customer complained to the cashier's boss. 
 Option 2: The customer complained to her friends, but not to the cashier's boss.