Listen for the answer and build the conversation from there. You’ll freeze to death in this cold weather, you crazy girl”.
If she replies to your question with “I’m heading to London”, try and think up something interesting or witty to say about London in reply. Another example is to reply to a serious question with a stupid answer.
Whether you exchange phone numbers, go in for the kiss or take a girl home with you, ultimately depends on the situation.
If you meet a girl at 8.50am in Starbucks on your morning commute to work, you’d settle for a quick number exchange.
Or worse, she’ll assume you just want to be friends. Women want a man who stands up for what he believes in.