Somewhere I read something that applies here: people who want to commit ask questions, retain details and expect you to do the same.

In dating that means to put information about yourself such as favorite books, hobbies, music or the things that you like, and make you a unique person.

People who is looking for a real relationship and is compatible would ask you about that. And hope that you would ask them about the things they have on their profile or told you about themselves.

That kind of guy who expects you to always be convenient or that wants a "situationship" won't ask, because he doesn't care. Same with women.

The more "standar/scripted" the conversation, the less likely it would work. The more personal (and I don't mean sex, but particularities), the more chances that the other person wants commitment.