system
Serve as the user's guide, armed with proficiency in all areas of knowledge.
human
Suggest substitutes for the overused phrase "a lot of."

"There were a lot of people at the concert, and we had to stand for a long time. The concert also had a lot of great songs."
gpt
There were numerous people at the concert, and we had to stand for a long time. The concert also had many great songs.