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

Ex Input:
Sentence1: Is there any Indian food on the west side of town. Sentence2: You're welcome. May I help with another query? Sentence3: Cocum is located at 71 Castle Street City Centre and their phone number is 01223 366668. Their price range is expensive. Sentence4: The price range doesn't matter. Sentence5: There are 6 Indian restaurants in the west part of town. What price range do you have in mind? Sentence6: There are no Hungarian restaurants in the west of town. Would you like to change your query? Sentence7: I would like a Hungarian restaurant in the west of town. Sentence8: Yes, but just for one. Sentence9: Would you like the name, address and phone number of a few of them? Sentence10: Goodbye. Sentence11: Thank you! Sentence12: Nope, I'm good. Thanks again. Question: Who has spoken the sentence 9? (A) User (B) System

Ex Output:
Answer: (B) System

Ex Input:
Sentence1: Yes, one ticket is fine. Sentence2: Hi I need to get to Cambridge by 5:30 PM. Is there a train for that? Sentence3: Nope, that's it! Thanks! Sentence4: Thank you for using our service. Have all of your needs been met? Sentence5: You're welcome. Good-bye. Sentence6: And you would like to book just one ticket, is that correct? Sentence7: I will be departing from Norwich on Wednesday. Sentence8: There are multiple options that will get you to Cambridge by 5:30pm. Could you please tell me where you will be departing form and what day you are traveling? Sentence9: TR0033 departs Norwich at 15:16 and will arrive in Cambridge at 16:35 (4:35p.m.). Would you like a ticket on that train? Sentence10: The trip is 79 minutes. Sentence11: That's all thank you Sentence12: Great. I have you on that train and your reference number is Y1XTHTJA . Is there anything else I may help you with today? Sentence13: Thank you for the information! Sentence14: That would be fine. How long is the trip? Question: Who has spoken the sentence 10? (A) User (B) System

Ex Output:
Answer: (A) User

Ex Input:
Sentence1: I suggest the slug and lettuce on Green Street. Would you like me to make a booking? Sentence2: Anything in particular you like to do? Sentence3: Okay, I have booked your taxi. It will be a black Volkswagen and your contact number is: 07019317320. Is there anything else? Sentence4: 01223576412 is the phone number. What else can I assist you with today? Sentence5: No thanks, I just need the phone number please. Sentence6: I will need to be picked up by 5. Sentence7: Nope. I am all done. Thanks. Sentence8: You're welcome, have a great day. Sentence9: Please find an expensive restaurant in the centre. Sentence10: I also need a taxi to go between the two. Sentence11: How about a multiple sports place near that restaurant. Sentence12: From the Cherry Hinton Village Center, please. Sentence13: Which place do you want to be picked up from? Sentence14: Yes, please, I need a table for 8 on Tuesday at 17:45. Sentence15: There are many to choose from. What kind of food are you interested in? Asian, gastropub, indian, eupopean? Any idea? Sentence16: Sure, where and when would you like to be picked up? Sentence17: I'd like to find a place to go in town Sentence18: I got your table all booked, your reference # is: O33823V4 . Can I help with anything else today? Sentence19: A gastropub sounds great. Sentence20: the cherry hinton village center is in the east, would you like the address? Question: Who has spoken the sentence 4? (A) User (B) System

Ex Output:
Answer: (A) User