travelccm aims at providing a clean API, and the corresponding C++ implementation, for choosing one item among a set of travel solutions, given demand-related characteristics (e.g., Willingness-To-Pay, preferred airline, preferred cabin, etc.). The travelccm C++ library implements some simple Customer Choice Models (CCM), as referenced in the literature (PhD dissertations at MIT, for instance: http://dspace.mit.edu). The travelccm C++ library exposes a simple, clean and object-oriented, API. For instance, the choose() method takes, as input, both a structure representing the travel request (e.g., "from Washington, DC, US, to Beijing, China, on the 25th of May") and a list of travel solutions (as provided by the Airline Schedule Manager project: http://sourceforge.net/projects/air-sched), and yields, as output, the chosen item. The output can then be used by other systems, for instance to book the corresponding travel or to visualize it on a map and calendar and to share it with others. travelccm makes an extensive use of existing open-source libraries for increased functionality, speed and accuracy. In particular the Boost (C++ Standard Extensions: http://www.boost.org) library is used. Install the travelccm package if you need a library of basic C++ objects for Customer-Choice Modeling (CCM), mainly for simulation purpose.