For this assignment we are going to re-design and modify the code for a system to schedule flight crews and aircraft for mean green airlines that we started in homework 2 and homework 3. for this we will need the following entities, plus collections for each of the entities: plane/aircraft, crew member and flight. the data for a plane will contain at least the following: (no change from hw4)make (e. g. boeing)model (eg 737)tail number (eg b171a)number of seats (eg 137)range (e. g. 800 miles)minimum number of cabin crewyou may add other data needed for your implementation as well as you will need accessor and mutator functions for the data. the data for a crew member will contain at least: (this has changed since hw4)