If you were the character here in the story,what would you do?

ahm..you have a restaurant,but one problem is many old people comes to ur resto but they stay there for almost 3-5 hours..you can't just ignore them because they also becomes close to you bec. they are ur patrons..bec. of what they are doing,that may discourage younger ones to go to ur resto and they may think that ur resto is for old peoples..,,so what are you going to do?or what advice can you give?