<prompt> Translate the following text to EnglishKwa kuongezea, katika miaka ya hivi karibuni, akiba ya kitengo hicho ilipunguzwa kwa ada ya 50 ambayo msafirishaji wa mkataba alitoza kwa nafasi zilizowekwa chini ya wiki tatu mapema.  <response>: Furthermore, in past years, the units savings were reduced by the 50 fee that the contract carrier charged for reservations made less than 3 weeks in advance. 