Do you know these words?

• あいさつ（を）する

  to greet

• おじぎを　する

  to bow (formal)

• ごめんください

  Excuse me. ; Anybody home? ; May I come in? (an expression used by a visitor)

• しつれいします

  excuse me

• それでは　しつれいします

  I've got to go now.