Context: "I want to speak with a prisoner." after knew that no one inside

[tos1]

When the player started to talk to a prison guard, one of choices is "I want to speak with a prisoner.". It has no problem. However, after the player knew that no one is in the prison by the guard's answer, the sentence on the choice to try enter into the prison does not change. It's better if it's something like "I want to see inside." after the player knew the empty.

Related lines seem to be:
----
dlga_start:prison_guard_talk
Yes? What do you want?
----
dlga_prison_guard_talk:prison_guard_ask_prisoners
Who is imprisoned here?
----
dlga_prison_guard_ask_prisoners:prison_guard_talk
Currently, {s50} {reg1?are:is} imprisoned here.{s49}
----
dlga_prison_guard_talk:prison_guard_visit_prison
I want to speak with a prisoner.
----

- How to reproduce it/when/why it happens:
Approach to some castles or towns, mouse hover over each of them, check no one is imprisoned, repeat this until you find an empty prison. Visit the place, find a prison guard, talk to him.

Guard: "Yes? What do you want?"
Choices:
"Who is imprisoned here?"
"I want to speak with a prisoner."
"Never mind."

Select "Who is imprisoned here?". The guard answers:
"Currently, no one is impresoned here."
Choices:
"Who is imprisoned here?"
"I want to speak with a prisoner." <----- Unchanged. It's unnatural.
"Never mind."

- Game version (and steam or downloaded):
AWoIaF v8.2, Warband v1.174 downloaded