I slept through most of my four-hour flight, IndiGo&rsquos very first Delhi-Bangkok connection &mdash a red-eye with a 5.30am departure to accommodate the strict check-in times at hotels in the destination city. But I'm happy to report that I slept like a baby. In the few minutes it took to stow my handbag and sink into my seat, a comforting IndiGo-ness had set in. The coordinates were familiar &mdash a clean, single-aisle aircraft that smelt new, jolly airhostesses in overalls and hair coiled into off-centre buns, cheeky drills (&ldquoLadies and gentlemen, boys and girls&hellip&rdquo) and an on-the-dot take-off.