2016-01-15T19:20:39+05:30 can advise them about the consequences people  face without food.
2.the hotel owner should impose a fine for people who face food.
I can tell them about those people who even can't get the food to eat. I will try to convince them not to order too much food. 

I think students should be teach in their childhood to not the waste the food. So that in future they will not waste it and also not let other waste it.