In the absence of any indication of a fault, a simple flameout could be considered for relight. I would not do it as a matter of course. It is an extremely unusual occurence- I cannot say in years of operating jets I have ever actually heard of a simple flameout without any complications, so why should it happen? I would look at the operating envelope/icing conditions and also discuss with company engineers before relighting. But there is not a lot of time to waste, as when a twin is on one, the instruction is 'land at the nearest suitable airfield'. Therefore, don't stooge around for 50 minutes dumping. Get it down- you should not leave 200 people depending on one engine. Gear problems......you are not going anywhere, unless it's a short hop to a repair station, yet not an emergency requiring an immediate landing. You have time to think about it!