A S A P.  as soon as possible
A T M.  automated teller machine 
B and B.  bed and breakfast 
C C T V.  closed-circuit television 
C R S.  central reservation system 
C S Q.  customer survey questionnaire 
C S T.  Central Standard Time - missing 
D S T.  daylight saving time - missing
E.  electronic 
E S T.  Eastern Standard Time
E T A.  estimated time of arrival 
E T D.  estimated time of departure 
F and B.  food and beverage 
F A A.  Federal Aviation Administration 
F E T.  foreign escorted tour 
F F P.  frequent flyer program
G D S.  global distribution system
G M T.  Greenwich Mean Time 
H Q.  headquarters 
I D D.  International Direct Dialing 
L R V.  light refreshment voucher 
M S T.  Mountain Standard Time 
P N R.  passenger name record 
P O S.  point of sale
P R O.  Public Relations Officer 
P S T.  Pacific Standard Time 
R O I.  return on investment 
R T W.  round the world 
S R P.  suggested retail price 
V I P.  very important person 
ZIP.  Zone Improvement Plan