No Change?

[jay]

It happened again on Friday, March 17. 

My bill came to $5.18. 

I handed the cashier $6.00.

He gave a dollar back to me saying he didn't have enough coins to give for change.

[jay]

It happened again. 

My bill came to $12.19. 

I handed the cashier $13.00.

She gave a dollar back to me saying she didn't want to give me all those coins.

[jay]

I purchased some items at a fast-food restaurant today.
My bill came to $5.18
I handed the cashier a 20-dollar bill.
My change should have been $14.82.
The cashier game me 3 five-dollar bills for change.

I guess the restaurant ran out of coins to give for change.