# number of nodes
21
# end

# root
21
# end

# left-right order should be retained
# nodes (node#, name, label, instances)
1, "origin", "From: City or Airport Code"
2, "destination", "To: City or Airport Code"
3, "departureMonth", "", "Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec"
4, "departureDay", "", "1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31"
5, "departureTime", "", "Early Morning, Morning, Noon, Afternoon, Early Evening, Evening, 1 am, 2 am, 3 am, 4 am, 5 am, 6 am, 7 am, 8 am, 9 am, 10 am, 11 am, 12 pm, 1 pm, 2 pm, 3 pm, 4 pm, 5 pm, 6 pm, 7 pm, 8 pm, 9 pm, 10 pm, 11 pm, 12 am"
6, "returnMonth", "", "Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec"
7, "returnDay", "", "1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31"
8, "returnTime", "", "Early Morning, Morning, Noon, Afternoon, Early Evening, Evening, 1 am, 2 am, 3 am, 4 am, 5 am, 6 am, 7 am, 8 am, 9 am, 10 am, 11 am, 12 pm, 1 pm, 2 pm, 3 pm, 4 pm, 5 pm, 6 pm, 7 pm, 8 pm, 9 pm, 10 pm, 11 pm, 12 am"
9, "numAdultPassengers", "Adults", "1, 2, 3, 4, 5, 6"
10, "numChildPassengers", "Children", "0, 1, 2, 3, 4, 5"
11, "cabinClass", "Class of Service", "Economy with Restrictions, Economy without Restrictions, Full Fare Economy Class +, Business Class, First Class ++"
12, "maximumStops", "Number of Connections", "No Preference, None, 1 or Less"
13, "carrier", "Choose a Carrier", "All AA Eagle and AmericanConnection, All Carriers"
14, "countryPointOfSale", "Country of Residence", "U.S. & All Others  (Non-U.S. residents can place reservations on hold for purchase at an AA airport or ticket office), Canada, U.K."
15, "", "Departure Date"
16, "", "Return Date"
17, "", "Number of Passengers"
18, "", "What Are Your Service Preferences?"
19, "", "Where Do You Want to Go?"
20, "", "When Do You Want to Go?"
21, "", ""
# end

# (level by level top-down, start from root)
# edges 
21-19,20,17,18,13,14
19-1,2
20-15,16
15-3,4,5
16-6,7,8
17-9,10
18-11,12
# end