Invite a key account's people to a webinar, once each

**Objective:** Register the Dynamics 365 Sales contacts at the account `{account-name}` for the upcoming GoTo Webinar webinar `{webinar-name}`, skipping anyone already registered, after one confirmation.

**Step 1: Identify the webinar (goto-webinar)**

Call `goto-webinar-get-webinar` with webinar-name.contains set to `{webinar-name}` and date.from set to today, so only upcoming webinars match. If nothing matches, stop and say so. If more than one distinct webinar key matches, list each with its name, date, start time and webinar key, and ask which one to use.

`goto-webinar-add-registrant` requires an organizer key. Use the organizer key from the webinar record if the result includes one; otherwise use `{organizer-key}`. If neither is available, stop and ask the user for it. Never guess it.

**Step 2: Find the contacts (dynamics-365-sales)**

Call `dynamics-365-sales-get-accounts` with `account-name` set to `{account-name}`; if more than one matches, list them and stop. Then call `dynamics-365-sales-get-contacts` with `parent-customer` set to the account name. Keep first name, last name, email and job title.

**Step 3: Skip existing registrations (goto-webinar)**

For each contact with an email, call `goto-webinar-get-registrant` with the webinar key and `email` set to it. Anyone returned is already registered: list them with their status and leave them out.

**Step 4: Confirm**

Show the webinar (name, date, start time, time zone) and a table of the people to register: first name, last name, email, job title. Say that GoTo Webinar sends each of them a confirmation email. Ask for one explicit yes; the user may remove rows first. Register at most 25 people per run.

**Step 5: Register (goto-webinar)**

After a yes, call `goto-webinar-add-registrant` once per confirmed contact with `first-name`, `last-name`, `email`, `webinar-key` and `organizer-key`, plus `job-title` when the contact has one. Leave the other optional fields empty.

**Step 6: Verify and report**

Call `goto-webinar-get-registrant` with the webinar key and each email. Report a table: name, email, status, join-url. If a status is waiting, explain that the webinar needs organizer approval and the join link is sent once approved.

**Rules & Guidelines:**

* `goto-webinar-*` tools are on the goto-webinar server; `dynamics-365-sales-*` tools are on the dynamics-365-sales server. If a tool from either server is missing, stop and say which server is not connected.
* `goto-webinar-add-registrant` is the only write tool this prompt may call, once per contact, after the yes.
* Never call `goto-webinar-delete-registrant`, and do not call any Dynamics 365 Sales create or update tool.
* Never register anyone for a webinar whose date has passed.
* If a registration fails, report the error as returned and carry on with the rest. Do not retry with changed values.
* Match email addresses case-insensitively after trimming spaces. GoTo Webinar and Dynamics 365 Sales share no other key, so never match two people on name alone; a name-only similarity may be mentioned as "possible match" but is not a match.

**Validation:**

* Contacts with no email, first name or last name are not registered. List them separately and say what is missing.
* If the account has no contacts, say so and stop.
* If the user does not answer yes, stop without writing anything.