Implement a function to calculate average flight duration, average ticket price, and number of flights between a given departure and destination.
Each flight is represented by a dictionary containing departure, destination, duration, and price. Return a dictionary with the two averages and the matching flight count. If no flights match, return zero for both averages and the count.
Use arithmetic averages without rounding.
departure and destinationduration and pricedef calculate_flight_stats(flights, departure, destination):