With the data on bookings added in, we can now explore some interesting queries that can help us.
All journeys that a user has undertaken will be all journeys that they have been a passenger on. We can use the user's e-mail to search for journeys on which the user has been a passenger.
To find all the journeys that the user has been a passenger on, we should find the journeys via the bookings, and then using the bookings, we can find the journeys, flights, and cities as shown:
neo4j-sh (?)$ MATCH (b:Booking)-[:HAS_PASSENGER]->(p:Passenger{email:"[email protected]"})
WITH b
MATCH (b)-[:HAS_JOURNEY]->(j:Journey)-[:BY_FLIGHT]->(f:Flight)
WITH b._id as booking_id, j.date_of_journey as date_of_journey, COLLECT(f) as flights ORDER BY date_of_journey DESC
MATCH (source:City)-[:HAS_FLIGHT]->(f)-[:FLYING_TO]->(destination:City)
WHERE f in flights
RETURN booking_id, date_of_journey, source.name as from, f.code as by_flight...