# W5 | openai/gpt-5.4-mini | run 2

## Prompt

Write an apology email to a client. We missed the agreed delivery date by a week due to an internal mistake (not their fault); the client is frustrated. Be sincere, take responsibility, offer a concrete next step, don't grovel. Under 130 words.

## Response

I’m sorry we missed the agreed delivery date by a week. This delay was caused by an internal mistake on our side, and I understand your frustration.

We take full responsibility for the miss, and I’m already putting the work back on track. The next step is [specific action], and I will send you a status update by [date/time].

I know this has impacted your plans, and I appreciate your patience while we correct it. If you’d like, I can also set up a quick call today to walk you through the updated timeline and answer any questions.

Best,  
[Your Name]

Would you like me to make it more formal or more firm?
