If that text actually exists in the message, the following macro will create a reply and put that text in the body of the reply before the default signature associated with the sending account.
Option Explicit
Sub Example()
Dim olMsg As MailItem
Dim olReply As MailItem
Dim olInsp As Outlook.Inspector
Dim wdDoc As Object
Dim oRng As Object, oStart As Object
On Error Resume Next
Set olMsg = ActiveExplorer.Selection.Item(1)
Set olReply = olMsg.Reply
With olReply
Set olInsp = .GetInspector
Set wdDoc = olInsp.WordEditor
Set oStart = wdDoc.Range(0, 0)
Set oRng = wdDoc.Range
.Display
With oRng.Find
Do While .Execute(findText:="Appointment Manager")
oRng.End = wdDoc.Range.End
oRng.End = oRng.start + InStr(oRng, "Company Website")
oRng.End = oRng.Paragraphs.last.Range.End - 1
oStart.Text = oRng.Text
'Or if you want the formatting of the original
'oStart.FormattedText = oRng.FormattedText
oStart.collapse 0
oStart.Select
Exit Do
Loop
End With
End With
lbl_Exit:
Set olMsg = Nothing
Set olReply = Nothing
Set olInsp = Nothing
Set wdDoc = Nothing
Set oRng = Nothing
Set oStart = Nothing
Exit Sub
End Sub