oca-mrp/odoo-bringout-oca-event-event_sale_session/event_sale_session/demo/event_session.xml

<?xml version="1.0" encoding="utf-8" ?>
<odoo>

    <record id="event_ticket_007_free" model="event.event.ticket">
        <field name="name">Free</field>
        <field name="description">Free entrance !</field>
        <field name="event_id" ref="event_session.event_event_007" />
        <field name="seats_max">0</field>
        <field name="product_id" ref="event_sale.product_product_event" />
        <field name="price">0.0</field>
    </record>

    <record id="event_ticket_007_standard" model="event.event.ticket">
        <field name="name">Standard</field>
        <field name="description">Standard</field>
        <field name="event_id" ref="event_session.event_event_007" />
        <field name="seats_max">0</field>
        <field name="product_id" ref="event_sale.product_product_event" />
        <field name="price">12.0</field>
    </record>

    <record id="event_ticket_007_vip" model="event.event.ticket">
        <field name="name">VIP</field>
        <field name="description">Standard + catering event</field>
        <field name="event_id" ref="event_session.event_event_007" />
        <field name="seats_max">0</field>
        <field name="product_id" ref="event_sale.product_product_event" />
        <field name="price">60.0</field>
    </record>

</odoo>