Development of interactive map

I am looking for a developer that could create an interactive map that could be used by our customers when they are designing their custom vacation. In essence the map would work similar to [login to view URL] and [login to view URL] The client would go to the build your own vacation page, where they would find the map. They would click on the starting city and a pop up will offer them the selection of hotels. They would select the hotel and add the date. Then they would select the next destination city, in which they would be presented with other hotels and the options for mode of transport. And so on. We would like to have the application for a specific continent for the moment but will likely expand in years to come. Interaction between the map and hotel data bases will need to be smooth and easy to use for non-computer experts.