How to display info from xml upload in telegram bot?

Question

Messengers

Hello!
Began to write Bota under telegrams. There was a question how to make an output of the information from xml.
Basic with text output when you write hello, he gave out hello, he did it. But I don't really understand how to output information.
There are fields 123.
It is necessary that when requesting a building of class 123, an xml feed is parsed and a random building is output from it, in which there is info.
Please, it is not difficult for anyone to write how it will look like.

Answer 1

Who can tell if it's correct?
def answer_message(message):
params = (message.text)
if params = (class B) # this is a test for the entered text
cursor.execute("{CALL getBuildingInfo2 (?)}", params ()) # here we turn to file, the question arose of how to search the file and display a random value according to the input request in params
return_value = cursor.fetchval()
bot.send_message(message.chat.id, return_value)