How to Get Missing Dates for Each Support Ticket In My Query?

Hello -

I'm really baffled as to how to get missing dates for each support ticket in my query.  I did a search for this and found several CTE's however they only provide ways to find missing dates in a date table rather than missing dates for another column in a table.  Let me explain a bit further here -

I have a query which has a list of support tickets for the month of January.  Each support ticket is supposed to be updated daily by a support rep, however that isn't happening so the business wants to know for each ticket which dates have NOT been updated.  So, for example, I might have support ticket 44BS which was updated on 2014-01-01, 2014-01-05, 2014-01-07.  Each time the ticket is updated a new row is inserted into the table.  I need a query which will return the missing dates per each support ticket.

I should also add that I DO NOT have any sort of admin nor write permissions to the database...none at all.  My team has tried and they won't give 'em.   So proposing a function or storable solution will not work.  I'm stuck with doing everything in a query.

I'll try and provide some sample data as an example -

CREATE TABLE #Tickets
(
	 TicketNo	VARCHAR(4)
	,DateUpdated	DATE
)

INSERT INTO #Tickets VALUES ('44BS', '2014-01-01')
INSERT INTO #Tickets VALUES ('44BS', '2014-01-05')
INSERT INTO #Tickets VALUES ('44BS', '2014-01-07')
INSERT INTO #Tickets VALUES ('32VT', '2014-01-03')
INSERT INTO #Tickets VALUES ('32VT', '2014-01-09')
INSERT INTO #Tickets VALUES ('32VT', '2014-01-11')

So for ticket 44BS, I need to return the missing dates between January 1st and January 5th, again between January 5th and January 7th.  A set-based solution would be best.

I'm sure this is easier than i'm making it.  However, after playing around for a couple of hours my head hurts and I need sleep.  If anyone can help, you'd be a job-saver :)

Thanks!!