What are the difference you face while interacting with a foreign customer ( one who is not of your nationality) and how you can improve on the same ?

Never interact with anyone without doing your homework of knowing his culture, language and what he need or may need from you.

there is no such a thing called a barrier if you know the problem you are more than capable enough to find a solution.

if language you can't speak look for freelancer translator or anyother method to communicate with the customer properly.

Language barrier is one of the most common problem in interacting with other nationalities. It may be because of the accent and the way they pronounce the word. In this case what is important is a person needs to exercise his good listenening skills and in order to communicate with other nationality you must learn to speak the English language slowly and clearly.

It is import how you will interact to other nationalities, the way we speak is a common issue we are facing. We have to level sometimes ourselves especially if the person doesn't know how to deliver or express themselves, try to understand what they wanted and speak little by little to understand them clearly. And try to learn more other accent or unfamiliar words that is very common.

Off course, its always a challenge to interact with foreigners. It is always advisable to learn and explore some basic tradition of the foreign people's tradition and cultures. 

Be courteous, polite, gentle and speak slowly when you speak in English with a non English speaking foreigner. Keep smiing and mind your body language.

Try to listen more than you speak to work on the lasting relationship with a foreign customers.