curl --request POST \
  --url https://api.ontora.com/v1/booking/{token}/confirm \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "slot_start": "<string>"
}
'

{
  "meeting_url": "<string>",
  "scheduled_at": "<string>",
  "message": "<string>"
}