Delete And Insert In The Same Sp

Here's my sp. Before I insert my new values I want to delete the existing records from the table. Can I do this in the same sp ? If so, could someone tell me the syntax please.

CREATE PROCEDURE [spRB_AddBlockBookingDateRef]

** here Delete * from tblRB_BlockBookingDates

@strBookingDateRef nvarchar(100),
@strRoomRef nvarchar (50),
@strDateRequired datetime

AS

INSERT INTO tblRB_BlockBookingDates(
BB_BookingDateRef,
BB_RoomRef,
BB_DateRequired)


VALUES
(@strBookingDateRef,
@strRoomRef,
@strdateRequired
)
GO