post:
  tags: [Conversation]
  summary: Create New Message
  description: All the agent replies are created as new messages through this endpoint
  parameters:
    - name: id
      in: path
      type: number
      description: id of the conversation
      required: true
    - name: data
      in: body
      required: true
      schema:
        $ref: '#/definitions/conversation_message_create'
  responses:
    204:
      description: Success
      schema:
        allOf:
          - $ref: '#/definitions/generic_id'
          - $ref: '#/definitions/message'
    404:
      description: Conversation not found
    403:
      description: Access denied