data structures, code in c++, also name the data structures used

You are required to provide users to plan a journey between his/her choice and displays the available options of different routes from point A to B, services of different bus operators etc. CONDITIONS: 1- City- select at least 60 cities, you need to store name of city only 2- Road network-information of roads between two cities to be stored 3- bus operators- at least 5 different bus operators, some may use same route. 4- Routes- journey between different cities/districts and operated by different bus operators