Zeitnot.

Let your interlocutor know that you must handle the situation in a very short time.The point is that such a limitation will make her/him feel uncomfortable. Experiencing emotions makes it harder for the victim to withstand and make reasonable and informed decisions. Usually, when I need to get the other person's consent quickly, I tell her/him, "Okay, we have five minutes, so let's get straight to the point. I propose...".