In such a case, a problem might occur and conflict between the two cultures is inevitable.
To avoid this, Bill, need to appropriately and make them aware that something they consider bizarre might be common in another culture, and we need to respect it.
In addition, through English we can study further hospitality across cultures. Let me give an illustration.
An American manager, Bill Morris, worked for an American multinational firm. He was then transferred to France.
In that country, he wanted to show his employees that he was a gregarious person. That was why he decided to throw a party to get acquainted with them.
Morris invited his employees to his elegant apartment and prepared everything perfectly, as he saw it. He was expecting to create a casual atmosphere but it turned out quite different.
His French employees considered him to be showing off too much and they didn't feel comfortable at all. In this case, neither party was to blame because the knowledge that they had was only speaking good English, and not something that is more important to take on board: hospitality across cultures.