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

[EX Q]: Sentence1: I am not looking for British, I am looking for scottish food. Sentence2: I am looking for something in centre of town then Sentence3: I'm sorry but there are no moderately priced Scottish restaurants in town. Would you like a different type of food? Sentence4: I've booked your reservation. Is there anything else you need? Sentence5: Yes I have many moderately priced venues in the center of town serving British food if you like. Sentence6: I am looking for a moderately priced Scottish restaurant Sentence7: I'm so sorry but it seems that I don't show any that will suit what you are looking for. Would you like to try a different price range or type? Sentence8: There is la tasca. They are located at 14 -16 Bridge Street. Would you like to book it? Sentence9: Can I have a reference number please? Sentence10: Thank you too, good bye. Sentence11: Thank you. Have a lovely day. Sentence12: Yes, it's XXNQ81IE . Sentence13: Yes, Could you look for a Spanish restaurant instead? Sentence14: Yes please. Could you give me a table for tuesday at 12:00 for 2 people please. Question: Who has spoken the sentence 12? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: I have the TR4849 train leaving Ely at 13:35 on Monday. Sentence2: How about cityroomz? It is located in the centre of the city, is moderately priced, has 0 stars, and has free wifi. I think it would be perfect ofor you! Sentence3: Perfect, could you also assist me in finding a place to stay? Sentence4: What will be my arrival time in Cambridge and what is the ticket price, please? Sentence5: You're welcome. Have a great day. Good bye. Sentence6: You are booked and your reference number is QUJQMRK7 . Can I help you with anything else? Sentence7: That is everything, thank you for your help. Sentence8: From where will you be departing? Sentence9: I'm looking for a train that goes to cambridge, leaving after 12:30 on monday Sentence10: I am leaving from Ely. Sentence11: Oh I'm not picky on the area. I definitely need free wifi, moderate price, and 0 stars though. Sentence12: That's perfect I need it booked for 8 people for 5 nights starting on Monday. Sentence13: I sure can. What area would you like to stay? Sentence14: The price is 4.40 pounds. You will arrive at 13:52. Question: Who has spoken the sentence 2? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: Yes. Could you give me the Train ID? Sentence2: Can I get a train to Cambridge on Friday? Sentence3: No, that should be all. Thank you for all your help. Sentence4: The phone number is 01223307030 and the postcode is cb58aq. Can I help you with anything else? Sentence5: You are very welcome. Travel safely! Sentence6: There is a depature at london kings cross at 7:17 am. Sentence7: Can I please have the phone number and postcode? Sentence8: I need to find a cheap modern European restaurant. Sentence9: There is a restaurant called the river bar steakhouse and grill that fits that criteria. It is located in the city centre. Sentence10: Yes, there is a train that departs at 13:09, arriving in Cambridge at 14:54. Would that work for you? Sentence11: Actually, I need to depart from leicester after 12:15. Sentence12: The train ID for that one is TR4625. Can I help you with more? Question: Who has spoken the sentence 3? (A) User (B) System
[EX A]:
Answer: (B) System