think there's a lot of interesting things to do there in terms of the richness of the pricing policy okay so with the passengers what do passengers do act fairly simple model of passengers every passenger is one ride so passenger equals one ride request I don't model any sort of longitudinal behavior of the passenger it's just simple and basically I'm just gonna model the passengers as entering if their price exceeds if their reservation value exceeds the current price in the system okay so to model that I think of every every ride request