## Overview
Retrieve the ancillary services (seats, baggage) for an existing flight booking: services that are **already booked** together with the live catalog of services that **can still be booked**.
## When to Use
- **Post-booking upsell** - Show the passenger which seats and bags they can still add after the booking was created
- **Booking management** - Display the services already attached to the booking with the prices that were charged
- **Availability refresh** - The bookable catalog is fetched live from the provider on every call
## What You Get
- **`groups`** - Bookable services grouped by category (seat, baggage) with post-margin prices and encoded `serviceId`s
- **`bookedServices`** - Services already attached to the booking; entries booked through the API carry the exact price that was charged at attach time
- **`expiresAt`** - Validity window of the bookable catalog
## Key Features
- **Read-only**: Safe to call at any time; the catalog reflects live availability
- **Consistent pricing**: Booked services echo the post-margin amounts the user actually paid
## Quick Start
Provide the `bookingId` from the flight booking confirmation.
> **Note:** Booking additional services on an existing booking is not available yet; this endpoint currently only reports availability.
Requires the `bookingId` and the `email` used to book: the server only returns or changes a booking when they match.
ConnectorNo auth