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: Oh great thank you for your help. Where is the train from cambridge to norwich depart from and when? Sentence2: Yes please, what is their entrance fee? Sentence3: I would like to book 6 tickets, please. And may I have the reference number once the booking is complete? Sentence4: Yes great! I have your reference number. It is HI5JHIXZ and the total cost of your tickets was 105.6 GBP. Please do enjoy your trip. Is there anything else I can help you with? Sentence5: There is a train leaving on Friday at 5:36. Would you like that one? Sentence6: I'm looking for a museum in the west area of town. Sentence7: There is a museum called Kettle's Yard in the west. Would you like to go here? Sentence8: Kettle's yard has a no entrance fee. Sentence9: No, I think that's all I need. Thank you for your help! Sentence10: I'm actually looking for one on Thursday that will arrive by 10:30. Are there any trains available for that? Sentence11: Sure thing, enjoy your trip! Sentence12: Yes! The price is 17.60 pounds. How many tickets would you like to book? Question: Who has spoken the sentence 10? (A) User (B) System
Answer:
Answer: (A) User