Refering to an interview question:
Perhaps you may mention during the interview that a quick word to the helpful folks at ATC would be in order.
No need to declare " min fuel" or anything drastic but mention you are a bit tight on fuel and sometimes they can give you a hand.
Not so great an idea in a high traffic enviroment but usefull when headed for the boonies.
Of course if you are actually at min fuel do not be shy about confessing.
I do believe there was a case in New york when a 707 was flown to exhaustion and they never actually CLEARLY told ATC that they had an emergency.
Take this with a grain of salt because:
Remember, I am a helicopter pilot and we always seem to be short of fuel from start up when IFR. Our low cruise speeds mean we are effected by any headwind and burn fuel at a high rate VS total on board. ( 600 LBS/ hr 1850 lbs on start - 135 KTS TAS 0 wind ) We also operate in the boonies and the alternate is often our departure airport.
Airline interviewers may be looking for an entirely different answer.
Best of luck.