Handle a Eurostar or international rail booking cancellation and refund via the SilverRail/Evolvi API model

Verified steps

1. Retrieve the booking record using the rail booking reference from your SilverRail (or Evolvi) booking store; confirm the ticket type and cancellation eligibility — flexible tickets are refundable, advance tickets typically are non-refundable before departure but may be exchangeable.
2. For Eurostar and international rail, query the SilverRail cancel preview endpoint with the booking reference to receive a cancellation quote showing the refund amount and any applicable fees before committing.
3. If the refund amount is acceptable, submit the cancellation request; SilverRail will reverse the ticket issuance with the rail operator (e.g., Eurostar, SNCF, DB) and trigger the refund to the original payment method.
4. Handle the cancellation confirmation: note the cancellation reference number and the expected refund amount; update your booking record to cancelled status.
5. If the ticket is non-refundable but the customer wishes to travel at a different time, initiate an exchange flow instead of a cancellation — most flexible European rail products allow one free exchange before departure.
6. For disruption-caused cancellations (train cancelled by the operator), the refund entitlement is full regardless of ticket type — trigger the disruption-reason refund path which bypasses penalty deductions.