SkyScanner RapidAPI not providing return flight

For a personal project I am trying to make use of the Sky Scanner API, in GO, via RapidAPI. Here is the URL I am using to perform the API request:

https://skyscanner-skyscanner-flight-search-v1.p.rapidapi.com/apiservices/browsequotes/v1.0/UK/GBP/en-US/SFO-sky/JFK-sky/2019-12-01?inboundpartialdate=2019-12-10

The issue is, I am only receiving the following response:

{"Quotes":[{"QuoteId":1,"MinPrice":403.0,"Direct":true,"OutboundLeg":{"CarrierIds":[851],"OriginId":81727,"DestinationId":60987,"DepartureDate":"2019-12-01T00:00:00"},"QuoteDateTime":"2019-11-29T14:24:00"}],"Places":[{"PlaceId":60987,"IataCode":"JFK","Name":"New York John F. Kennedy","Type":"Station","SkyscannerCode":"JFK","CityName":"New York","CityId":"NYCA","CountryName":"United States"},{"PlaceId":81727,"IataCode":"SFO","Name":"San Francisco International","Type":"Station","SkyscannerCode":"SFO","CityName":"San Francisco","CityId":"SFOA","CountryName":"United States"}],"Carriers":[{"CarrierId":851,"Name":"Alaska Airlines"},{"CarrierId":870,"Name":"jetBlue"},{"CarrierId":1065,"Name":"Frontier Airlines"},{"CarrierId":1721,"Name":"Sun Country Airlines"}],"Currencies":[{"Code":"GBP","Symbol":"£","ThousandsSeparator":",","DecimalSeparator":".","SymbolOnLeft":true,"SpaceBetweenAmountAndSymbol":false,"RoundingCoefficient":0,"DecimalDigits":2}]}

As far as I can tell this does not contain the return flight.

I was wondering if anyone had any experience using this/knows where I am going wrong.

Thanks!

You need to use the Browse Quotes Inbound endpoint of RapidApi.