CPLEX 6.6.0: 
CPLEX 6.6.0: optimal solution; objective 208.3333333
15 simplex iterations (0 in phase I)
ampl: display x;
x [*] :=
business   20
 economy  150
   first   10
;

ampl: display y;
y :=
business midday     10
business morning    20
business weekend    20
economy  midday    150
economy  morning   150
economy  weekend   150
first    midday      5
first    morning    10
first    weekend    10
;