answer: #Person2# wishes to employ an irrevocable letter of credit. #Person1# asks if #Person2# could adopt D/A or D/P and thus #Person1# doesn't need to pay a deposit, but #Person2# only accepts L/C for regular orders.
documents: #Person1#: Well, we've settled the problems of price, quality and quantity. What mode of payment do you wish to employ?
  #Person2#: Irrevocable letter of credit, of course. It's the normal terms of payment in international business.
  #Person1#: Could you adopt D / A or D / P? You see I have to pay a deposit when I open a letter of credit. That will tie up my funds and add to the cost of my imports, especially for such a huge order.
  #Person2#: You might consult your bank and see if you could reduce the required deposit to a minimum.
  #Person1#: Anyhow, there would be certain bank charges. We've done business for years and you should have some faith in our credit. It would help me greatly, if you could accept D / A or D / P. It makes no difference to you, but it does to me.
  #Person2#: Well. As you understand, the irrevocable L / C gives the exports additional protection of the banker's guarantee. We always ask for L / C for our exports, and the other way around, we pay by L / C for our imports. We only accept L / C for regular orders.