My trick:
Beggar: can i have Gold pls?
You: no!
Beggar: pls Sir pls
You: no!
Beggar: pls i really need it
You: Hmm you really need gold?
Beggar: yes
You: go tavern.
Beggar: tavern?
You: yes talk to Lady diana and Do the quest she gives you.
Beggar: ok, which tavern?
You: doesnt matter, kraag or windmoor

Then he leaves and you had a bit fun