In this task, you are given dialogue, and you have to find the most critical location in the given conversation.

Hello! I'm planning a trip to South Dakota, so I would like to know more about transportation there.
South Dakota and Montana share a land border which is not transversed by a paved road.
Well, I guess I won't be driving across to Montana on my visit! Does South Dakota have public transportation, like rails or buses?
BNSF is the biggest railroad in South Dakota!
Great, I hope to ride that! If I decide to fly, does South Dakota have an airport?
Yes it's called Sioux Falls Regional Airport and Rapid City Regional Airport.
Great, that's good to know. What can you tell me about South Dakota's history?
Land Speculators founded two of eastern South Dakotas largest present day cities.
Do you happen to know what those cities are?
Yankton and Siux Falls
Nice! Have there been any Native Americans in South Dakota's history?
Not too sure, but I do know they have had a lack rainfall, extremely high temperatures and inappropriate cultivation techniques produced what was known as the Dust bowl in South Dakota.
I've heard of the Dust Bowl but I never knew what it was about. I hope to learn more when I go on my trip! Thanks for all of your help!
You're welcome!
South Dakota