Joey Prusak saw a visually-impaired man unknowingly drop $20 this week at the Dairy Queen in Hopkins, Minnesota. A woman behind the man quickly pocketed the cash, then claimed it was hers.
When the woman went up to the counter to order, Prusak refused to serve her unless she returned the money. When she refused, the young store manager went a step further.
"I told him, you dropped $20, I would like to give you $20 on behalf of myself and Dairy Queen to try and make things right," Prusak said. "They think what I did was so extremely nice when really all I was doing was the right thing to do."
The 19-year-old manager has received loads of praise since a customer's email to Dairy Queen about the incident was posted online.
Dairy Queen spokesperson Dean Peters told ABCNews.com that Buffett has requested that Prusak attend the Berkshire Hathaway shareholders meeting in May 2014 in Omaha, Neb., so that he can meet him.
"We're thrilled that Joey, one of our young managers in Hopkins, would do something like that, to go above and beyond to help out a customer like he did," Peters said. "We couldn't be more proud."
Peters said the company is "absolutely" working on a way to reward Prusak but aren't ready to make a public announcement yet.
Prusak has worked at the Hopkins Dairy Queen since he was fourteen and is trying to save money to go to school to study business management.
(ABC News and The Associated Press contributed to this report)