Draft a response for those submissions that don't meet the criteria

[rmartinezduque]

Subtasks:

• Draft a template/response that we can tailor to each specific case
• Inform them that briefings will be open to the public, so they can still attend as listeners if they wish

[rmartinezduque]

@mohiuddinomran helped draft this response that we can use to inform folks who complete the form but do not meet the criteria.