What is diplomatic language services? For more than 20 years Diplomatic Language Services has been a prominent language testing facility for federal agencies, the US military, and private corporations. Tests for speaking, listening, reading, and translation skills are evaluated using the Interagency Language Roundtable (ILR) guidelines.Why choose didiplomatic language services? Diplomatic Language Services’ network of localization professionals includes over 6,000 linguists worldwide. DLS provides localization services that will transform your text to the target language and adapt the text for a specific country or region.What do you not say in a diplomatic way? Don't say: You didn't explain this point. Say: I didn't understand this point. Don't say: You need to give us a better price. Say: We're looking for a better price. So, those are our 5 pieces of advice for being polite and diplomatic. Try to use them when you speaking and you will become a more effective communicator in English.Why is it important to maintain a diplomatic and professional tone? This is why maintaining a diplomatic and professional tone is very important in customer service. This means that you’ll sound relaxed and logical, and you won’t insult or blame anybody. Using a diplomatic and professional tone shows that you care about everybody’s opinions and experiences.