person A: I had to wait in line for 15 minutes at the store today. There was only one poor cashier working.
person B: That must of been a pain! I hate waiting in lines for cashiers_comma_ they are so slow sometimes.
person A: The cashier couldn't help it. The store should hire more people.
person B: Stores should really open more checkouts when it is busy_comma_ especially during rush our!