answer: #Person2# is not sure which type of L/C to choose on a form. #Person1# recommends choosing the irrevocable one.
documents: #Person1#: Hello. Is everything OK, there?
  #Person2#: I'm having a little trouble with this form.
  #Person1#: What seems to be the problem?
  #Person2#: There are two types of L / C here and I'm not sure which one I want.
  #Person1#: That's right, there's'revocable'and'irrevocable'. We usually go for the irrevocable one, it's the most popular.
  #Person2#: So, I should choose that one?
  #Person1#: I would recommend it, yes. Then you just need to complete that form.
  #Person2#: I see. It's very nice of you to help me. Is this form alright?
  #Person1#: Yes, that's all in order. Let's get this processed for you, then.