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

[EX Q]: Sentence1: Have a great day! Sentence2: Let's go with City Centre North B and B. I need to book for 6 people, 2 nights, and starting on Saturday, please. Sentence3: I have listings for two,city centre north b and b and worth house. Sentence4: That sounds great. Can you book that for 6 people for me? Sentence5: TR3602 departs at 15:59 Monday and arrives at London Liverpool street by 17:27. Does this suit your needs? Sentence6: thank you that will be all Sentence7: I'm looking for a train leaving after 15:30 from cambridge. Sentence8: I'm also looking for a recommendation on a hotel with free parking in the north. Sentence9: Sure! I have 6 people booked for monday with reference number 3EBQSQSC and a total of 99.6 GBP. Can I help you with anything else? Sentence10: Do you have a price range? Sentence11: Yes. Your reservation was successful. The booking number is 4H91C8I3 . Sentence12: london liverpool street and should leave on monday Sentence13: Yes, I'd like to keep it cheap, please. I do need free wifi, though. Sentence14: There are over 623 trains leaving then. Where will you be going to? Question: Who has spoken the sentence 2? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: There is a moderate priced Indian Restaurant located on the east side, would you like that address? Sentence2: That's it, thanks. Good bye. Sentence3: Thank you for calling. Goodbye. Sentence4: Yes please, could I have the address, phone number, and postcode of the venue? Sentence5: located in the east side Sentence6: Hi, I want a moderately priced restaurant. Sentence7: curry prince's address is 451 Newmarket Road Fen Ditton, their postcode is C.B 5, 8 J.J. Their phone number is 01223 566388 Sentence8: There are several restaurants in the moderate price range. Do you have a preference for the type of food or part of town? Sentence9: Thank you. Sentence10: You're welcome. Anything else I can help you find? Question: Who has spoken the sentence 6? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: I do! It's located at Hills Rd in Cambridge and the postcode is CB20QQ. Sentence2: Thank you very much. Have a nice day. Goodbye. Sentence3: Would you happen to have info on the Addenbrookes Hospital? Sentence4: Thanks, that's all I need. Good bye. Question: Who has spoken the sentence 1? (A) User (B) System
[EX A]:
Answer: (B) System