Have you ever had to adjust your communication style to engage a customer or teammate? what was the situation and the outcome?

Most of the people in a third world country who deals with a lot of tourists or foreigners can relate to this. There will always be a language barrier that you should be wary of. I had worked as a tour-guide once and I had Japanese customers with me. As you may know, most of Japanese people have a hard time speaking in or understanding English and if they don't, they somehow find it difficult to pronounce some words. As a tour-guide, I need to speak slowly and clearly so that they will be able to understand every word that I say. In turn, they respond and ask questions to me which means that they are hesitant to do so.