Dim Prompt As String
  Dim RetValue As String
  Dim Rng As Range
  Dim RowCrnt As Long

  Prompt = ""

  With Sheets("Sheet1")
    Do While True

      RetValue = InputBox(Prompt & "Give me a value to look for")
      'RetValue will be empty if you click cancel
      If RetValue = "" Then
        Exit Do
      End If

      Set Rng = .Columns("A:A").Find(What:=RetValue, After:=.Range("A1"), _
                LookIn:=xlFormulas, LookAt:=xlWhole, SearchOrder:=xlByRows, _
                SearchDirection:=xlNext, MatchCase:=False, SearchFormat:=False)

      If Rng Is Nothing Then
        Prompt = "I could not find """ & RetValue & """"
      Else
        RowCrnt = Rng.Row
        Prompt = "I found """ & RetValue & """ on row " & RowCrnt
      End If
      Prompt = Prompt & vbLf
    Loop

  End With

End Sub