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, see if 15:00 is available. Sentence2: I am sorry, I was unable to reserve a table for that time on Saturday, would you like to try a different time slot? Sentence3: I need a guesthouse in the cheap price range. Sentence4: Yes, I am also looking for a restaurant called The Nirala. Sentence5: Do any of these hotels have 4 stars? Sentence6: Booking was a success! Sentence7: Any area is fine, but I'd like to book rooms for 8 people. We'll be staying 5 nights, beginning on Saturday. Can any of them accommodate that? Sentence8: I have many results for a cheap guesthouse, would you like to narrow it down to stay in a particular area of the town? Sentence9: Glad that I could be of service. Goodbye! Sentence10: I'd like to book a table there for 8 at 16:00 on Saturday, please. Sentence11: I was able to get you rooms at the Alexander Bed & Breakfast. Reference number is : HREOM15W . Can I be of further assistance today? Sentence12: The nirala serves indian food in the north side of town. It is located at 7 Milton Road Chesterton, phone 01223360966. Is there anything else I can help with? Sentence13: Could you please provide the reference number? Sentence14: Great - that's all I need today. Thanks for your help! Sentence15: Sure thing. The reference number is Z1YHIR0Y . Sentence16: Yes, in fact 7 of the 9 hotels in your search criteria have 4 stars. Would you like to narrow your search by area? Question: Who has spoken the sentence 4? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: How about a chinese restaurant? Sentence2: I'm so sorry, but I wasn't able to make that reservation for you. May I try on another day or at another time? Sentence3: I was able to get you that reservation on Wednesday. The table will be reserved for 15 minutes prior to your arrival. Sentence4: You as well. Thanks for calling. Goodbye. Sentence5: No, I don't need that anymore. Thanks. Have a great day! Sentence6: Absolutely, the reference number is W92C2Z47 . Is there anything else I can help you with today? Sentence7: The hotpot sounds like a good idea. Need a reservation? Sentence8: May I have the reference number please? Sentence9: Yes, let's shoot for the same thing but on Wednesday instead, okay? Sentence10: i want a place for dinner and serves a mexican food,where can i find it?please first pick for me a taxi to that place should be to the north. Sentence11: Yes, please. 6 people at 11:30 on sunday. Sentence12: That was all. Thanks Sentence13: Did you say you also needed a taxi to the restaurant? Sentence14: Unfortunately, I was unable to find a Mexican restaurant in the north. Is there anything else I can help you with? Question: Who has spoken the sentence 2? (A) User (B) System

Ex Output:

Answer: (A) User