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

Ex Input:
Sentence1: i want some mexican food. Sentence2: Dojo Noodle Bar serves asian oriental food and is located in the centre of town. The price range is cheap. Sentence3: The phone number for dojo noodle bar is 01223 363471. Would you like any other information? Sentence4: I don't care. Sentence5: You're welcome. Goodbye. Sentence6: We have four Asian oriental restaurants in centre. What price range do you prefer? Sentence7: What is the phone number? Sentence8: No, thank you, that's all I need. Thank you and goodbye! Sentence9: The only listing for Mexican food is Chiquito Restaurant Bar. How else may I assist you? Sentence10: I want a restaurant in the centre and serves asian oriental food? What is the phone number? Question: Who has spoken the sentence 9? (A) User (B) System

Ex Output:
Answer: (B) System


Ex Input:
Sentence1: royal spice serves indian food in the cheap price range and is in the North part of town. Sentence2: royal spice's address is Victoria Avenue Chesterton Sentence3: What kind of food would like? Sentence4: Da vinci pizzeria serves Italian food in the cheap price range and is in the North part of town. Sentence5: Are there any other options? Sentence6: That sounds great. May I have their address please? Sentence7: I am looking for a cheap restaurant that is in the north part of town. Sentence8: enjoy! Sentence9: Thank you very much , bye bye Sentence10: Any Question: Who has spoken the sentence 3? (A) User (B) System

Ex Output:
Answer: (B) System


Ex Input:
Sentence1: I need a train from Cambridge as well. Sentence2: What time does the 15:51 train arrive? Sentence3: I'm looking for a restaurant called The Nirala. Can you tell me where it is? Sentence4: Sure! What is your destination? Sentence5: Yes as close to 16:45 as possible, book for 2 people please Sentence6: It leaves at 15:00 and gets there at 15:51, sorry for any confusion. Sentence7: thank you and enjoy your stay in our city! Sentence8: It's located at 7 Milton Road Chesterton. Would you like me to book a table? Sentence9: You're all set! Your reference number is QMY8NA1T . Do you need anything else? Sentence10: Would you like me to book the 15:51 train? Sentence11: Okay there are 6 trains that match. Shall I complete a booking? Sentence12: Could you please book a table for 2 at 14:45 on Wednesday Sentence13: I have booked tickets for 2 people, and your reference number is UBY652ER . Anything else I can do for you? Sentence14: I am going to london kings cross on saturday Sentence15: Thank you, that's all for now. Sentence16: The train needs to arrive by 16:45 Sentence17: I have a train that leaves at 5:00 on Saturday. Would you like me to book it for you? Sentence18: Yes please book that train for me. Question: Who has spoken the sentence 4? (A) User (B) System

Ex Output:

Answer: (A) User