BOOKING CLASSES CO DESIGNATED CO OPERATED
    STANDARD FIRST -E
    STANDARD BUSINESSFIRST -E
    STANDARD COACH -G
 
UPGRADE BOOKING CLASSES
  DOMESTIC/CANADA:
    FIRST CLASS - F
 
  NORTH AMERICA TO/FROM MEXICO/CARIBBEAN/CENTRAL AMERICA/
    SOUTH AMERICA/EUROPE/MIDDLE EAST/ASIA AND HAWAII:
    FIRST CLASS/BUSINESSFIRST - Z  (FULL FARE TKT ONLY)
 
  NORTH AMERICA TO/FROM MEXICO/CARIBBEAN/CENTRAL AMERICA/
    SOUTH AMERICA MIDDLE EAST/ASIA AND HAWAII:
    FIRST CLASS/BUSINESSFIRST - R  (MOST/DISCOUNT FARES)*
 
    *IF R CLASS IS NOT DISPLAYED IN AVAILABILITY BOOK Z.
     HOWEVER DO NOT BOOK Z IF R IS DISPLAYED IN
     AVAILABILITY BUT IS SIMPLY NOT AVAILABLE FOR SALE.
 
  NORTH AMERICA TO/FROM EUROPE:
    FIRST CLASS/BUSINESSFIRST - R  (MOST/DISCOUNT FARES)
 
  WITHIN ASIA - Z  (FULL OR MOST/DISCOUNT FARES)