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

[EX Q]: Sentence1: Can you give me the address for the Parkside Police Station? Sentence2: No, that's all. Good bye. Sentence3: The address you're seeking is Parkside, Cambridge. Sentence4: Telephone : 01223358966 Postcode : CB11JG. Is there anything else? Sentence5: You're welcome. Thank you for contacting TownInfo centre today. Goodbye Sentence6: Thank you, what is the phone number and postcode? Question: Who has spoken the sentence 2? (A) User (B) System
[EX A]: Answer: (A) User

[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: I'm looking for some info on kohinoor. Sentence2: Great thank you for all your help Sentence3: That worked out for you! Your reference number is IHQK49W4 . Sentence4: I could eat at 12:45. I hope that is available. Sentence5: Great! Kohinoor is an Indian cuisine restaurant in the cheap price range! Is there anything else I can help you with? Sentence6: Unfortunately reservations are not possible for that time. Would you like to try for another day or time? Sentence7: Thank you for calling, goodbye. Sentence8: Yes, I'd like to book a table for just me at 13:45 on Friday. Question: Who has spoken the sentence 4? (A) User (B) System
[EX A]:
Answer: (A) User