answer: #Person1# tells #Person2# #Person2# needs a stamp and a sign on the advice slip to make the payment so #Person2# will come back later with everything sorted.
documents: #Person1#: Welcome to IBA. Can I help you?
  #Person2#: Yes, please. I'm here for an International Settlement. Our company has to effect payment, and it needs to be done today. Here's the advice slip for the payment.
  #Person1#: Thanks. I'm sorry to say that you need to get this stamped. There is no stamp on this slip and it is essential before I can process it for you.
  #Person2#: I see. So, I need to stamp it. And sign it too?
  #Person1#: Yes, that's right. Down here, at the bottom right hand corner to show that you agree to pay the printed amount.
  #Person2#: I'll go back to the office and get it sorted and pop back later. Thanks, bye for now.