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

[EX Q]: Sentence1: Okay, great. Have a safe trip. Goodbye. Sentence2: Yes please. I need it booked for 1 person for 2 nights starting tuesday. Can i get a reference number? Sentence3: I have found the allenbell guesthouse. It meets all of your criteria, is in the cheap price range, and provides internet and parking. Would you like me to book it? Sentence4: Thank you, that is it for today. Goodbye. Sentence5: The reference number for your booking is KEBFTR7I . Can I do anything else for you? Sentence6: I need a place with rated 4 stars in the east. Can you help me find one that like a guesthouse? Question: Who has spoken the sentence 1? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: Hello, I'm looking for an Italian restaurant on the East side. Thank you! Sentence2: Is this restaurant in the moderate price range? Sentence3: Let me know what else you need . Sentence4: Have a nice day then! Sentence5: Thank you for your help. Bye. Sentence6: Yes book a table for 8 on sunday at 19:30 please. Sentence7: No I will call back thank you. Sentence8: Can you find another restaurant int he same area and price range for me? Sentence9: I did not say to book rajmahal. What type of food does it serve? Sentence10: I was able to book rajmahal, reference number is KSFSKIC1 Sentence11: The address and phone for the Rajmahal is 7 Barnwell Road Fen Ditton cb58rg, 01223244955. Enjoy our city. Sentence12: They serve Indian food. Sentence13: Your reservation is made. The number is KSFSKIC1 . Sentence14: If there are not any Italian restaurants available in the area that are moderately priced, Rajmahal will be fine. Sentence15: I hope to. Goodbye. Sentence16: I show one called the PIZZA HUT FEN DITTON that serves Italian style food and is located on the east side in the Cambridge Retail Park Newmarket Road Fen Ditton Sentence17: It is listed in the moderate range. Would you like to book a reservation? Sentence18: I'm sorry, we were not able to book a table at that restaurant. Would you like me to find another restaurant? Question: Who has spoken the sentence 12? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: Yes I can. When will you be traveling? Sentence2: I am trying to book a train to broxbourne. Can you help me? Sentence3: Three people are booked. The reference number is 9W4723ZW . The total fee is 53.7 GBP payable at the station. Do you need anything else? Sentence4: Yes I am looking for a place to stay in the east that has a cheap price range. Sentence5: Ok, if you need any further assistance, feel free to contact us again at any time. Have a wonderful day. Sentence6: TR8300 Departs at 05:01, would that work for you? Sentence7: No, that will be all. Thank you. Sentence8: Are you sure I can't help you with a booking or more information about one of the hotels? Sentence9: I need to arrive by 15:00 on wednesday and depart from cambridge please. Sentence10: The address is 710 newmarket road and the postal code is cb58rs. May I help you with anything else? Sentence11: Yes - could you make a reservation for 3 people and provide me the reference number? Sentence12: We have 3 for you. All are guesthouses and located in the east. Allenbell, autumn house and leverton house. All have 4 stars and offer free wifi & parking. Sentence13: Excellent. That's all I need thanks. Sentence14: Actually, yes. Can you give me the address and postcode for Autumn House? Question: Who has spoken the sentence 6? (A) User (B) System
[EX A]:
Answer: (A) User