David is worried about his parents safety ,so May tells him how to take good care of them.
David: My parents are going there all by themselves, so I am worried about this trip for them.
May: Don't be. You can help them to make the plan better before they set off.
David: Yes, I know. But the problem is how.
May: You can teach your parents a few words of Italian like thank you, how much, excuse me.
David: Yeah, you are right.
May: You also can use the tourist office to book tours and other activities. Some hotels offer this service, but the prices and arrangements are sometimes less pleasing
David: Thank you very much.