2
1 call start
1 return
1 call addFlight xid "347" 100 310 
1 return true 
1 call addRooms xid "Stanford" 200 150 
1 return true 
1 call commit xid
1 return true
1 call start
1 return
2 call start
2 return
2 call addFlight xid "347" 100 620
2 return true
1 call addRooms xid "Stanford" 200 300
1 return true
2 call queryRoomsPrice xid "Stanford"
2 except transaction.TransactionAbortedException
1 call commit xid
1 return true
1 call start
1 return
1 call queryFlight xid "347"
1 return 100
1 call queryFlightPrice xid "347"
1 return 310
1 call queryRooms xid "Stanford"
1 return 400
1 call queryRoomsPrice xid "Stanford"
1 return 300
1 exit
