public static void ReserveRoom(string person, string roomNumber, DateTime enterTime, DateTime leaveTime)
{
dynamic repo = new Repo();
dynamic room = repo.GetRoomByNumber(roomNumber);
dynamic customer = repo.GetPerson(person);
if (customer == null)
{
customer = repo.AddPerson(person);
}
room.Reserve(customer, enterTime, leaveTime);
}