<prompt> Translate the following text to EnglishWakati huo huo, ikiwa wafanyakazi wangeruhusiwa kuhifadhi faida za ndege za mara kwa mara, wanaweza kuwa tayari kutumia baadhi ya maili zao kwa safari kama hizo kwa hiari.  <response>: At the same time, if employees were allowed to retain the frequent flyer benefits, they might be willing to use some of their miles for such travel on a voluntary basis. 