Answer:
Hello, Sir. How may I help you? formal language
“OMG! This dress looks so pretty on you?” Informal language
Mr. Davies has requested that you wait for 10 more minutes. Formal Language
The pasta was, like, so awesome I ate it all. Informal Language
Ms. Day informed all students that they need to make their submissions by next week. Informal Language
Man, you got the passes? No way! Informal Language