<span>Ancient Greek democracy had a deep influence on the design of political institutions in the United States. The various members of the founding generation of the United States saw ancient Athens the cradle of Greek democracy as both an inspirational model and also as an example of dangerous excess. </span>
In this situation, you should ask the caller to hold on for a moment, and thank them when they're agree.
But, since you're handling the person on the phone first, you need to smile to the person in front of you, and politely ask him/her to wait until you finish your call. After you handle the person on the phone than you could proceed as usual with the person in front of you.
