Then you need to be skilful enough to keep the dialogue going. That includes being patient enough to get ALL the required information. And, actually listening to what they are saying. It also includes not "shooting yourself in the foot" by saying something stupid.
At a higher skill level, it includes really understanding the PERSON in front of you and artfully using your language skills to move them into DESIRE and beyond procrastination. While attending to any objections that come up along the way.