Sentence 1: Scott had run into an old friend while shopping. 
 Sentence 3: Scott agreed but he had a packed calendar and explained so 
 Sentence 4:  Scott knew the friend didn't believe him and they awkwardly parted 
 Sentence 5:  He feeled bad and vowed to make his schedule less cluttered 
 Option 1: His friend wanted to meet for lunch sometime. 
 Option 2: His friend looked like he had been going through a rough time.