Artificial intelligent assistant

ante-ambulo

ante-ˈambulo Obs.
  [L., f. ante before + ambulāre to walk; app. in familiar use in 17th c.]
  One whose business it is to walk in front, an usher.

1609 Man in Moone (1857) 95 [A serving-man] is the ante-ambulo of a gentlewoman, the consequent of a gentleman. 1641 Maisterton Serm. 18 An anteambulo to usher in a thousand pains. 1706 Phillips, Anteambulo, A Sergeant of the Mace to a Prince, a Verger or Gentleman-usher.

Oxford English Dictionary

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