Sure, here's a more formal response:

Dear [Boss's Name],

I hope this email finds you well. I wanted to provide an update on the status of the report that we have been working on. Unfortunately, there has been a slight delay in its completion due to unforeseen circumstances. Specifically, it took longer than anticipated to gather and verify all of the relevant data, which was crucial to maintaining our usual high quality standards.

Nonetheless, I am pleased to inform you that the report is now nearing completion, and you can expect it to be delivered later today. I apologize for any inconvenience this may have caused and appreciate your patience during this process. If you require any additional information or clarification, please do not hesitate to reach out.

Thank you for your understanding, and I look forward to sharing the completed report with you soon.

Best regards,
[Your Name]
spam fails_task lang_mismatch pii not_appropriate hate_speech sexual_content quality toxicity humor helpfulness creativity violence