diff --git a/src/booking/OfferRequests/OfferRequestsTypes.ts b/src/booking/OfferRequests/OfferRequestsTypes.ts
index cb860e78..5534f8c7 100644
--- a/src/booking/OfferRequests/OfferRequestsTypes.ts
+++ b/src/booking/OfferRequests/OfferRequestsTypes.ts
@@ -16,12 +16,12 @@ export interface OfferRequestSlice {
   /**
    * The city or airport the passengers want to travel to
    */
-  destination: Place | string
+  destination: Place
 
   /**
    * The city or airport the passengers want to depart from
    */
-  origin: Place | string
+  origin: Place
 
   /**
    * The type of the origin
diff --git a/src/booking/OfferRequests/mockOfferRequest.ts b/src/booking/OfferRequests/mockOfferRequest.ts
index 2c569c54..c6b39a11 100644
--- a/src/booking/OfferRequests/mockOfferRequest.ts
+++ b/src/booking/OfferRequests/mockOfferRequest.ts
@@ -4,8 +4,32 @@ import { CreateOfferRequest, OfferRequest } from '../../types'
 export const mockCreateOfferRequest: CreateOfferRequest = {
   slices: [
     {
-      origin: 'LHR',
-      destination: 'JFK',
+      origin: {
+        iata_code: 'LHR',
+        type: 'airport',
+        name: 'Heathrow Airport',
+        longitude: -0.458118,
+        latitude: 51.470311,
+        id: 'arp_lhr_gb',
+        icao_code: 'EGLL',
+        iata_country_code: 'GB',
+        iata_city_code: 'LON',
+        time_zone: 'Europe/London',
+        city_name: 'London',
+      },
+      destination: {
+        iata_code: 'JFK',
+        type: 'airport',
+        time_zone: 'America/New_York',
+        name: 'John F. Kennedy International Airport',
+        longitude: -73.778519,
+        latitude: 40.640556,
+        id: 'arp_jfk_us',
+        icao_code: 'KJFK',
+        iata_country_code: 'US',
+        iata_city_code: 'NYC',
+        city_name: 'New York',
+      },
       departure_date: '2020-04-24',
     },
   ],
diff --git a/src/booking/Orders/OrdersTypes.ts b/src/booking/Orders/OrdersTypes.ts
index 55ad3f2e..d62f02f0 100644
--- a/src/booking/Orders/OrdersTypes.ts
+++ b/src/booking/Orders/OrdersTypes.ts
@@ -1,8 +1,8 @@
-import { Airport } from '@duffel/api/types'
 import {
   Aircraft,
   Airline,
   AirlineInitiatedChange,
+  Airport,
   CabinClass,
   DuffelPassengerGender,
   DuffelPassengerTitle,
diff --git a/src/booking/Orders/mockOrders.ts b/src/booking/Orders/mockOrders.ts
index 3e909396..36204aba 100644
--- a/src/booking/Orders/mockOrders.ts
+++ b/src/booking/Orders/mockOrders.ts
@@ -296,7 +296,6 @@ export const mockOnHoldOrders: Order[] = [
             ],
             origin_terminal: null,
             origin: {
-              type: 'airport',
               time_zone: 'America/Indiana/Indianapolis',
               name: 'Indianapolis International Airport',
               longitude: -86.295526,
@@ -331,7 +330,6 @@ export const mockOnHoldOrders: Order[] = [
             distance: null,
             destination_terminal: null,
             destination: {
-              type: 'airport',
               time_zone: 'America/New_York',
               name: 'Miami International Airport',
               longitude: -80.288826,
@@ -466,7 +464,6 @@ export const mockOnHoldOrders: Order[] = [
             ],
             origin_terminal: null,
             origin: {
-              type: 'airport',
               time_zone: 'America/Indiana/Indianapolis',
               name: 'Indianapolis International Airport',
               longitude: -86.295526,
@@ -501,7 +498,6 @@ export const mockOnHoldOrders: Order[] = [
             distance: null,
             destination_terminal: null,
             destination: {
-              type: 'airport',
               time_zone: 'America/New_York',
               name: 'Miami International Airport',
               longitude: -80.288826,
diff --git a/src/booking/PartialOfferRequests/mockPartialOfferRequest.ts b/src/booking/PartialOfferRequests/mockPartialOfferRequest.ts
index 47e14008..8c7316e4 100644
--- a/src/booking/PartialOfferRequests/mockPartialOfferRequest.ts
+++ b/src/booking/PartialOfferRequests/mockPartialOfferRequest.ts
@@ -4,8 +4,32 @@ import { CreateOfferRequest, OfferRequest } from '../../types'
 export const mockCreatePartialOfferRequest: CreateOfferRequest = {
   slices: [
     {
-      origin: 'LHR',
-      destination: 'JFK',
+      origin: {
+        iata_code: 'LHR',
+        type: 'airport',
+        name: 'Heathrow Airport',
+        longitude: -0.458118,
+        latitude: 51.470311,
+        id: 'arp_lhr_gb',
+        icao_code: 'EGLL',
+        iata_country_code: 'GB',
+        iata_city_code: 'LON',
+        time_zone: 'Europe/London',
+        city_name: 'London',
+      },
+      destination: {
+        iata_code: 'JFK',
+        type: 'airport',
+        time_zone: 'America/New_York',
+        name: 'John F. Kennedy International Airport',
+        longitude: -73.778519,
+        latitude: 40.640556,
+        id: 'arp_jfk_us',
+        icao_code: 'KJFK',
+        iata_country_code: 'US',
+        iata_city_code: 'NYC',
+        city_name: 'New York',
+      },
       departure_date: '2020-04-24',
     },
   ],