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

[EX Q]: Sentence1: Might I suggest the Autumn House. It is a cheaper guesthouse that offers both free parking and free internet. Would you like more info for them? Sentence2: It really doesn't matter. I don't need internet. I just for sure want a 4 star place. Sentence3: Thank you! Can you also get me a train going to Cambridge that day? Sentence4: Sure. There are six different options in that area. What were you looking for as far as price range and amenities? Sentence5: Is there anything else that you need? Sentence6: I need a 4 star hotel in the east, please. Sentence7: I think this is what I needed. Thanks. Sentence8: Sure! I just need to know where you plan on departing from and what time you'd like to leave. Sentence9: Booking was successful. Reference number is : 544D87NG . Sentence10: I need a room for 4 for 4 nights starting on Tuesday. Question: Who has spoken the sentence 3? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: That is all, thank you, goodbye. Sentence2: Is there anything else we can help you with? Sentence3: Goodbye. Sentence4: Ok. Thanks. Sentence5: I am looking for a restaurant in the south part of town and serving portuguese food. What is the address and phone number? Sentence6: Nandos is a portuguese restaurant in the south part of town. Their address is Cambridge Leisure Park Clifton Way and their phone number is 01223 327908 Question: Who has spoken the sentence 2? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: I'm looking for a cheap restaurant in the east part of town. Sentence2: No, thank you, I have everything I need. Thank you and goodbye! Sentence3: Goodbye. Sentence4: the missing sock is a nice restaurant in the east part of town in the cheap price range Sentence5: What is the address and phone number? Sentence6: The address of The Missing Sock is Finders Corner Newmarket Road and the phone number is 01223 812660. May I help you with anything else today? Sentence7: Goodbye. Sentence8: Thank you for using our system. Good bye Question: Who has spoken the sentence 7? (A) User (B) System
[EX A]:
Answer: (B) System