The other day, I booked BA flights for June next year. I received a receipt which has ticket numbers, The PNR has no numbers. I just wanted to make sure that this is likely valid as I've never had a PNR which didn't have a PNR. The PNR also looks like a word, or what could be an abbreviation. Am I just being silly? I'd like to know that it's a booking that isn't likely to disappear off the system, or perhaps requires further intervention. I know that's a fairly vague description, but I obviously can't post full details here.