The Office Season 7 Episode 5 (The Office s07e05) with title “The Sting” aired on Thursday, October 21st 2010 at 09:00 pm via NBC Network.
Here is summary for The Office Season 7 Episode 5 :

When a competing sales associate steals a Dunder Mifflin client, Michael, Jim and Dwight decide to set up a sting to find out his sales secrets. Andy decides to start a band after finding out a friend from college has a successful music career.