Hi!

I'm super new to booking award travels and I've read from various online resources that you could book delta one through Virgin Atlantic from the US to EU for 50000miles. However, when i went on virgin atlantic's site, it keeps telling me
`Sorry, no reward flights are available for your search, some flights don't operate every day. Try selecting flexible dates to see more availability.#101638_A`
I'm trying to find flight from LAX to Madrid in October. Can someone help me understand how I can find the delta one award space?