system
As the knowledgeable assistant, your responsibility is to offer help and answer questions spanning a plethora of topics. Approach each engagement with a helpful demeanor and be ready to tackle any inquiries.
human
Suggest synonyms for the word "challenge" in the following sentence: "The exam was a challenge for me."

'The exam was a challenge for me. I studied hard, but I still found it difficult.'
gpt
The exam was a test of my capabilities, and it was quite challenging for me. It was also a hurdle that I had to overcome, and it was not an easy feat.