For each fictional review below, draft a brief, useful public reply and identify a theme. Use only the review text. Acknowledge the specific feedback without inventing service context, investigations, refunds, contact attempts, promises, or customer experiences. Do not ask for or include personal details. Do not publish the replies.

{
  "disclosure": "Fictional training examples. These are not real customer reviews.",
  "reviews": [
    {"id": "A", "type": "positive", "text": "The technician explained the faucet repair clearly and left the work area tidy."},
    {"id": "B", "type": "concern", "text": "I was frustrated by the wait and did not know what was happening."},
    {"id": "C", "type": "mixed", "text": "The repair was completed, but scheduling took longer than I expected."}
  ]
}