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

[EX Q]: Sentence1: How about the Gonville Hotel located in the centre area of town? Sentence2: Between $100-$300 per night. Sentence3: I have several available. What is your price range? Sentence4: Ok, I have several hotels. Any particular location? Sentence5: Location doesn't really matter as long as there's free parking available. Sentence6: What is their postcode? Sentence7: I need a place to stay with free wifi. Sentence8: Their postcode is cb11Iy, address gonville place, phone 0122336661 they have wifi and free parking too. Would you like me to book this for you? Question: Who has spoken the sentence 4? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: I am looking for Mediterranean food in the center of the city. Sentence2: I show 3 available. 2 are in the expensive range and 1 is cheap. May I book a table for you? Sentence3: Thanks for calling. You have a great day! Sentence4: I have booked you at the Shiraz Restaurant for 7 people Saturday at 15:45. Your table will be reserved for 15 minutes. Sentence5: I'd like the expensive range and I'd like to book a table for 7 people on Saturday at 15:45. Sentence6: Great. Thanks so much! Sentence7: Thank you so much. That is all I need today. Have a great evening. Sentence8: Sure. Your reference number is MSV3UPS2 . You will likely need it. Question: Who has spoken the sentence 4? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: That's a lovely 4 star guesthouse in the south part of town. What would you like to know? Sentence2: Yes, I need some information on rosa's bed and breakfast. Sentence3: Thank you for using our service today! Sentence4: No that's it, thank you for your help. Sentence5: I want to leave from Bishops Stortford and go to Cambridge. Sentence6: Yes please book it for the same group of people and 2 nights starting from the same day. Sentence7: Hello, I am looking for a train that leaves on Friday after 10:00. Sentence8: Booking was successful. Reference number is : GXVPCRC1 . Is there anything more I can help with? Sentence9: TR6834 departs Bishops Stortford at 11:29 arriving by 12:07 in Cambridge. Does this work for you? Sentence10: The booking was successful and your reference number is 5636CNX2 . Please pay 70.7GBP at the station. Is there anything else? Sentence11: That will work great. Could you please make a booking for seven people? Sentence12: Ok, and where will you be leaving from and heading to? Question: Who has spoken the sentence 3? (A) User (B) System
[EX A]:
Answer: (B) System