Question: asking someone to do something politely?
Answer: In more formal situations. Excuse me… …. ... 
Say hello. A “hello” and a smile go a long way! Say “hello” at the beginning of your request. ... 
Remember “please” and “thank you” “Please” normally goes at the end of the sentence: ... 
Say “excuse me” If you ask someone who is doing something else, remember to say “excuse me”: