Sentence 1: Jon needed some new clothes. 
 Sentence 3: The friend offered his employee discount 
 Sentence 4:  John wasn't sure but the friend said it was allowed 
 Sentence 5:  John was able to get some clothes at cheaper prices 
 Option 1: He worked at a clothing store and wanted to buy clothes there. 
 Option 2: A friend worked at a clothing store.