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.

What can you tell me about Chennai?
Chennai is the capital city of Tamil Nadu, an Indian state.
I love History. What kind of History do they have?
In 2006, there was a tsunami in Chennai that killed over 200 people and permanently changed the coastline.
Oh, wow. Was that the largest one to ever hit the area?
I don't know that but I can tell you more about history. The city is 350 years old and still has a lot of charm.
That is really old. Do you know if any wars ever affected the area?
I don't know that but I can tell you a little about the climate. There are sometimes cyclones in the Bay of Bengal.
That's scary. What do you know about their Infrastructure?
Chennai is the gateway to southern India so tourists often land in Chennai and then visit the rest of the region.
What's the biggest mode of transportation in the area?
Trains are big in Chennai. There 4 railway stations - Chennai Central, Chennai Egmore, Chennai Beach and Tambaram.
Are trains also used to import and export goods?
I don't have that information. Is there anything else I can tell you?
No, that's all I need. Thanks for your help.
you're welcome
Chennai