Written in C# Emulate a simple long-distance bus service reservation system.
We are dealing with a handful of routes each with a number of daily running buses, each with a specified number of seats.
Each customer that buys a ticket will get an assigned seat.
Invalid reservation will result in an exception.
Here is a possible list (you might want to come up with a hierarchy of these exceptions):
counter is closed,
seats are not available,
service is cancelled,
insufficient funds to purchase,
payment gateway is not responding.
No other details mentioned name of routes can be anything.