Comment by csomar

The trick to talking to strangers, in my experience, is to find an opportune moment where you have a reason to talk to them (ie: you are both looking at the same departure timetable and you ask about a particular train/flight). The response will determine whether the stranger is open to carrying on a conversation. Of course, if their presence in the shared space is short, this makes it harder as these opportunities are not always present.

Smoking is probably the best lubricant (ie: borrowing a lighter, asking about a brand/vape, etc.) and people when they smoke are usually more open to strike a conversation. That's not an endorsement of smoking (and I've quit very recently).