Hello friends, I have to book a sleeper ticket (only one person) for May 20 from Coimbatore to MGR Chennai Central. Preferred trains are 12602, 12672, 12674, 12624, 12686. All these are in waiting list. My question is, is there any possibility in any of these trains to get a confirmed by the date of journey if I book the ticket now. Attaching the availability status of these trains to make it easy for you, please help me out.