请教匈铁预定布达佩斯到布拉格夜火车问题！

请教匈铁可以搜到布达佩斯到布拉格这趟夜火车，但在输入出生日期后搜索就没有了，显示“No offer available for the journey with these conditions. For the list of available offers click here.
In case you have entered a city marked with asterisk as departure or destination (e.g.: BUDAPEST*, WIEN*, PRAHA*, HAMBURG*, WARSZAWA*, etc.), and you have not received any offer, please repeat the search with entering a specific station of that city (e.g.: Budapest-Keleti, Wien Hauptbahnhof, Praha hl. n., Hamburg Hbf., Warszawa Centralna, etc.)”
谁定过布达佩斯到布拉格的夜车票，给指点一下，万分感谢。