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

[EX Q]: Sentence1: Enjoy your travels! Let us know if we can be of any further assistance. Sentence2: TR8143 departs at 14:11 and arrives in Cambridge by 14:58, does this suit your needs? Sentence3: I need a train leaving from kings lynn. Sentence4: Yes, I'd like to travel on Wednesday, and I'd like to arrive in Cambridge no later than 15:30. Sentence5: There are no nightclubs in the west. Would you like to try another area? Sentence6: There are 133 trains leaving Kings Lynn, do you have a particular day you are traveling? Sentence7: They have free entrance. Their postcode is cb30ds. Sentence8: Could you look up a college instead then? Sentence9: I'm glad I could help. Sentence10: Churchill college is located in the west part of town. Sentence11: Yes it does. Can you verify the total travel time and price? Sentence12: Thank you goodbye. Sentence13: Thanks a lot, that's all. Sentence14: Sure - the travel time is 47 minutes, and the fee is 9.80GBP per ticket. Sentence15: I also need a nightclub in the west. Sentence16: Could you get me the postcode and entrance fee for there? Question: Who has spoken the sentence 9? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: I was just involved in a car accident. Sentence2: You should contact this number: 01223358966. Sentence3: The address is Parkside, Cambridge, postcode CB11JG. Sentence4: Yes, I have a passenger that is hurt. How can I get to the hospital to make sure they are okay? Sentence5: You are welcome. Have a great day. Sentence6: I'm very sorry to hear that! Have you called the police yet? If not here is their number 01223358966. Is there anything else I can help with? Sentence7: Thanks, what's the address and postcode to the police department? Sentence8: Thank you for the info. That'll be all for now. Question: Who has spoken the sentence 2? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: Thank you for contacting the Cambridge TownInfo centre, have a great day! Sentence2: Excellent. What's the address and area there? Sentence3: Ok great. Your taxi booking has been completed. The care type will be a white tesla. Would you like the contact number? Sentence4: I have no preference. Can you please provide me with the address, postcode, and area on one? Sentence5: Yes, that sounds lovely. Thank you. Sentence6: I need to book a taxi to commute between the museum and the restaurant, leaving the museum by 14:30. Sentence7: The Fitzwilliam Museum, in the centre, has free admission. Trumpington St, cb21rb. Sentence8: I'm looking for a local restaurant to try in Cambridge. Sentence9: You're welcome. Is there anything else I can help you with? Sentence10: There are many! Is there a certain style of cuisine you are looking for, or a specific price range? Sentence11: Yes, on second thought I would like help finding a restaurant. What do you know about north american cuisine restaurants? Sentence12: Yes, please. That would be great. Sentence13: I think I can find a restaurant on my own, but can you tell me if there are any museums? Sentence14: There is one expensive North American restaurant in the centre of town. It is called the Gourmet Burger Kitchen. Sentence15: I have found 23 differnt museums in town. What part of town are you wanting to travel to? Sentence16: The number is 07555434856, is there anything else I can do for you? Sentence17: gourmet burger kitchen, in the centre is located at Regent Street City Centre Sentence18: No, that should be good, thank you. Question: Who has spoken the sentence 8? (A) User (B) System
[EX A]:
Answer: (A) User