It depends what type of person you and the girl are.Casually invite her along much like you'd invite a regular (male) friend.
Therefore, to find لڑکیوں کے فون نمبر it might be a challenge, yet with 180 million people, not impossible. If you go to Pakistani websites with girls photos, names, emails and numbers they are fake and posted by some guy. Better is to read my advice here, follow it and find the Shahzada, Rani or Malika of your dreams.Have a regular phone chat about the latest interesting events in your life / her life / current events just as you would with a guy friend, let the conversation wrap up "It's been good talking to you, I have to get going now for (mention the reason: work/dinner/plans/whatever)".But before you hang up, interrupt yourself to enthusiastically mention "Hey, I'm doing (activity X) later/tomorrow/Saturday (whatever day.) You should come along, it'll be fun".You will go from want to be operator to having a number in hand. When I meet my wife we had a brief walk in the park.I got her cell phone number and we learned that communication was easier on the phone messages and exchanging pictures initially.