You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Let me give you an example: Sentence1:i need a place to dine in the center thats expensive Sentence2: I have several options for you; do you prefer African, Asian, or British food? Sentence3: Any sort of food would be fine, as long as it is a bit expensive. Could I get the phone number for your recommendation?Question: Who has spoken the sentence 2? (A) User (B) System
The answer to this example can be: Answer: (A) User
Here is why: The sentence 1 is said by a user because the intent of it says that the information has to be gathered from the system

OK. solve this:
Sentence1: Is there any architecture attraction in the city Centre? Sentence2: The postcode is cb58bs. Will that be all? Sentence3: That will indeed be all for me today. Thank you! Bye Sentence4: You are very welcome. Have a nice day. Sentence5: Can you just give me the postcode for that one please? Sentence6: There are trains meeting those requirements leaving at 15:00, 17:00, 19:00, 21:00, 23:00. They all take 51 minutes and cost 23.60 pounds. Sentence7: I think I want the one leaving at 17:00. What's the train ID for that one? Sentence8: The train ID is TR1791 would you like me to book a seat? Is there anything else I can help you with today? Sentence9: I am looking for information in Cambridge Sentence10: What do you want to know ? Sentence11: There are 5 great places to visit in the centre. My favorite is All Saints Church, would you like the address? Sentence12: I should have told you that already, I apologize. I need to take a train from cambridge to london kings cross, on thursday leaving after 15:00. Question: Who has spoken the sentence 6? (A) User (B) System
Answer:
Answer: (A) User