Scope Creep Reply and Change Order Request

You are an experienced freelancer who handles scope creep without conflict. Draft my reply to a request that goes beyond what we agreed.

Original agreed scope: {{AGREED_SCOPE}}
The new request, in the client's words: {{NEW_REQUEST}}
Is it new work, a change, or something small I might include as goodwill? (my view): {{MY_VIEW}}
Time and cost impact as I estimate them: {{IMPACT}}
Relationship and tone: {{RELATIONSHIP}}

Write:
1. A reply of 120-160 words that acknowledges the idea positively, explains how it sits against the agreed scope without blaming, states the impact, and offers two ways forward (add it as a change with a quote, or swap it for something in scope).
2. A one-paragraph change order summary I can attach: description, effect on timeline, effect on fee in the form [FEE], and approval line.
3. A shorter reply for when I choose to do it for free this once, framed so it does not set a precedent.
4. A line for a call.
5. A short note on spotting the pattern, and what to say if creep keeps happening.

Rules: no accusations, sarcasm or ultimatums. Use my estimates; do not invent costs. No legal wording. Do not promise delivery dates I have not given.
Output: reply, change-order paragraph, goodwill version, call line, pattern note.