Why in the following search is LH4722 both available and unavailable?
[KVS Availability Tool 3.3.1/Platinum - SNT: Awards/StarAlliance/JP-ANA]
Code:
SIN Singapore Changi SG [WSSS]
LHR London Heathrow UK [EGLL]
SUN 23 Aug 2009 / 1 Seat
Carrier Flight From Depart To Arrive A/C Availability
--------- ------ ---- --------- ---- --------- ---- ---- -------------
LH 779 SIN 23:05 FRA 05:25 +1 744 FS+ CS- YS-
-> LH 4722 FRA 07:30 +1 LHR 08:05 +1 321 FS/ CS- YS-
SQ 26 SIN 23:50 FRA 06:30 +1 744 FS- CS+ YS+
-> LH 4722 FRA 07:30 +1 LHR 08:05 +1 321 FS/ CS+ YS+