diff --git a/apps/api/v2/src/ee/bookings/2024-08-13/services/input.service.ts b/apps/api/v2/src/ee/bookings/2024-08-13/services/input.service.ts
index de185c48d6..b2a931e08c 100644
--- a/apps/api/v2/src/ee/bookings/2024-08-13/services/input.service.ts
+++ b/apps/api/v2/src/ee/bookings/2024-08-13/services/input.service.ts
@@ -817,7 +817,7 @@ export class InputBookingsService_2024_08_13 {
     // for an individual person, so api users need to call booking by booking using uid + seatUid to cancel it.
     return {
       uid: bookingUid,
-      cancellationReason: "",
+      cancellationReason: inputBooking.cancellationReason || "",
       allRemainingBookings: false,
       seatReferenceUid: inputBooking.seatUid,
     };
diff --git a/packages/platform/types/bookings/2024-08-13/inputs/cancel-booking.input.ts b/packages/platform/types/bookings/2024-08-13/inputs/cancel-booking.input.ts
index c8f7498e1b..9b0f669484 100644
--- a/packages/platform/types/bookings/2024-08-13/inputs/cancel-booking.input.ts
+++ b/packages/platform/types/bookings/2024-08-13/inputs/cancel-booking.input.ts
@@ -24,4 +24,9 @@ export class CancelSeatedBookingInput_2024_08_13 {
   })
   @IsString()
   seatUid!: string;
+
+  @IsString()
+  @IsOptional()
+  @ApiPropertyOptional({ example: "User requested cancellation" })
+  cancellationReason?: string;
 }