Check some useful Japanese phrases here: www.learn-hiragana-katakana.com/japanese-phrases/

挨拶。例えば　こんにちわ　お早うございます　お世話になります　お疲れ様です じゃね　お休みなさい

Hmmm... Your quetion is a little way too rough. depends situations. if you meet someone, you will use greeting phrases like "Konnichiwa", "Arigatou gozaimasu" and "Sumimasen". These are very common phrases in daily communications.

Ohayou Gozaimasu, Doumo Arigatou Gozaimasu, Dou Itashimashite..