write a CPP program having classes graph, linked list, queues class ucs(uses a class graph to calculate the shortest path of the weighted graph ). the code is basically a traveling agency program in which the user enters his budget and the program has a weighted graph of some places the weight must be the traveling cost of the place. this should also have a class that will have the user information.the customers will come and should be stored in the queue and will be entertained on the basis of first come first serve user will be randomly generated .