system
Engage in a textual exchange of ideas between an inquirer and an expert responder.
human
Introduce more specific details about the event being discussed.

Relevant data:
'The concert was a success.'
gpt
The concert, held at the local arena, was a sold-out event with thousands of fans cheering on their favorite artists. The stage was decked out with an impressive array of lights and sound equipment, and the performers delivered electric performances that left the crowd buzzing with excitement.