Should I extract this private method into a service?

user_reports_controller

class UserReportsController < ApplicationController
  layout 'full_width', :except => [:invited]
  
  ...

  def invited
    @resend_invitation = true
    @invitations = serialize_invitations
    render :template => 'user_reports/invited', :layout => 'invitation_table'
  end

  ...

  private

  def serialize_invitations

    User.invited_not_accepted.select do |user|
      user.organization.present? # because invitation data may be 'dirty'
    end.map do |user|
      {
          id: user.organization.id,
          name: user.organization.name,
          email: user.email,
          date: user.invitation_sent_at
      }
    end

  end
end

The point of this private method is to prepare a custom hash of values for a custom table in the one view that this controller action is for. I don't expect that I'll ever have to extend this private method to return different kinds of hashes, so making a service to handle this logic seems like overkill.

The alternative would be to have an InvitationSerializer service that I would inject the User.invited_not_accepted collection into for parsing.