Plan a new customer's onboarding

Plan the onboarding for our new customer {{customer_name}}, as a document I can share with them at the kickoff call. The goal is to get them to first value (the first point where they get a real result from what they bought) as early as possible, because customers who see a result early are far more likely to stay.

What they bought:
"""
{{purchase_details}}
"""

What they want to achieve, from the sales handoff:
"""
{{customer_goals}}
"""

Their team and roles: {{customer_team}}
Deadlines and constraints (launch dates, approvals, holidays): {{constraints}}
What onboarding we provide (sessions, hours, resources): {{our_onboarding}}
Plan length: {{plan_length}}

Include:
1. First value: one sentence defining it for this customer, and a target date.
2. Milestones: a table with Week, Milestone, What "done" means, Owner on their side, and Owner on ours. Put the setup tasks that block everything else first.
3. Training: who needs which session, by role, so no one sits through training they do not need.
4. Check-ins: when, with whom, and the question each one answers.
5. What we need from them: access, data, decisions and people's time, with dates.
6. Risks to watch: up to four, such as no executive sponsor or a data migration that depends on their IT team, each with what we will do about it.

Keep it to about two pages (under 700 words), in plain language their team can follow without knowing our product's vocabulary.

Use only the services and resources listed above. Do not promise extra sessions, custom work, integrations or dates we have not committed to, since the customer will plan around this document. Leave out filler such as "We're excited to partner with you".

If the goals from the handoff are vague, for example "improve efficiency", do not guess a measure. Write "[TO AGREE AT KICKOFF]" where the measure goes, and add three questions for the kickoff call that would pin it down.