Given the task definition and input, reply with output. In this task, you are given dialogue, and you have to find the most critical location in the given conversation.

Hello! I have been assigned a 3 page report on Mauritania and I am clueless. Could you help me with some interesting facts about Mauritania?
Mauritania is a country in Northwest Africa.
Great, we are off to a good start. Could you give me some information on the society of Mauritania?
Arabic is the official and national language of Mauritania.
Please tell me more! This is quite interesting to me.
During the mid to late 1900s, Mauritania shifted its foreign policy to one of increased co-operation with US and Europe.
I did not know that. Do you have any facts about their economy that you think would be suitable for my report?
Mauritania has been described as a "desperately poor desert nation" and is an oil producer.
Interesting, apparently they don't produce enough oil I take it? Tell me more of their economy if you could...
There may be additional oil reserves inland in the Taoudeni basin, although the harsh environment will make extraction expensive.
Oh, that makes sense. I didn't realize it was that harsh. Thank you so much for assisting me today. This will really help my report.
You are so welcome.
Mauritania