Register a contact for the right webinar, once

**Objective:** Register `{full-name}` (`{email}`) for the upcoming webinar `{webinar-name}`, once, after checking they are not already registered and getting the user's confirmation.

**Step 1: Identify the 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.

**Step 2: Get the organizer key**

`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 the organizer key of the GoTo Webinar account that owns this webinar. Never guess it.

**Step 3: Check for an existing registration**

Call `goto-webinar-get-registrant` with the webinar key and email set to `{email}`. If a record comes back, report its status and join-url and stop. Do not register them again. Only if the user then explicitly asks for the confirmation email to be resent, call `goto-webinar-add-registrant` with resend-confirmation set to true.

**Step 4: Confirm**

Split `{full-name}` into first name (the first word) and last name (the rest). If it is a single word, ask for the last name. Show the user: webinar name, date, start time and time zone, first name, last name and email. Ask for an explicit yes.

**Step 5: Register**

After a yes, call `goto-webinar-add-registrant` once, with first-name, last-name, email, webinar-key and organizer-key. Leave the optional fields empty unless the user supplied them.

**Step 6: Verify**

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

**Rules & Guidelines:**

* `goto-webinar-add-registrant` is the only write tool this prompt may call, and only once, after the user's yes.
* Never call `goto-webinar-delete-registrant`.
* If the registration fails, report the error as returned and stop. Do not retry with changed values.
* Never register someone for a webinar whose date has passed.

**Validation:**

* If `{email}` is not an email address, ask for a valid one before calling any tool.
* If the user does not answer yes, stop without writing anything.