Task: Multi-Turn / Consistency
User instruction:
"He go to store yesterday but forgetted buy milk so he sad and goes back home quick."
Please correct the mistakes.
Also tell me the reason why he came home early.
Please make the phrase “so he was sad and went back home quickly” more concise and natural.

Evaluation criteria:
The answer must be in English.
Any grammatical errors in the original English text should be corrected.
You must interpret the original text and explain “the reason he came home early.”
You should answer in English.
The phrase "so he was sad and went back home quickly" needs to be made more concise and natural.
The revised answer must remain in English.