Recall SMS for a lapsed client

Write a recall SMS for a client who hasn't booked in a while.

Client first name: {{first_name}}
Discipline / what we worked on: {{focus}}
Last time I saw them: {{last_seen}}
Reason for the nudge (just checking in / new offering / season-relevant): Just checking in
My first name: {{my_name}}

Write 1-2 short sentences. Friendly, like a real person texting. Reference what we worked on (so it doesn't feel like a mailout). Mention the reason briefly. Don't use 'reach out' or 'touch base'. End with an easy yes (e.g. 'happy to book a slot if it'd help').

Return just the SMS body — no greeting like 'Hi'.