There is nothing to be afraid of.
How to do things with your character? . . .
Have a good attitude and smile. You can say, "Hello, we are from a company, and our company has launched an activity." As long as you pass the list when you talk, most people will hold it. Then he said, "You can contact us if you need anything. There are contact information on the list "and it's over.
When you meet someone who doesn't care about you, just smile and say "I'm sorry" and leave.