Henry D. Sahakian
The venture was a success , but Sahakian sought new challenges and , noting the rapid growth of Southland Corporation's 7-Eleven convenience stores throughout the region , flew to the chain's Dallas headquarters to personally petition for an exclusive territory of stores . 
<triplet> Southland Corporation <subj> Dallas <obj> headquarters location <triplet> 7-Eleven <subj> Dallas <obj> headquarters location