Valkov said he could not curb the summer charter flights of national carrier Balkan Airlines , which carries thousands of foreign tourists to the Bulgarian Black Sea resorts .
<response> <person>Valkov</person> said he could not curb the summer charter flights of national carrier <organization>Balkan Airlines</organization> , which carries thousands of foreign tourists to the <misc>Bulgarian</misc> <location>Black Sea</location> resorts . </response>