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

Ex Input:
Sentence1: Kymmoy is in the centre of town and the phone number is 01223 311911. May I help you with anything else? Sentence2: Thank you, I have all I need. Goodbye! Sentence3: What is the phone number and area? Sentence4: Is there any expensive restaurants in town serving Australian food? Sentence5: You're welcome. Thanks for your call! Goodbye. Sentence6: Kymmoy is an expensive asian oriental restraunt in town. Sentence7: I'm sorry, there are no Australian restaurants. Would you like another type of food? Sentence8: How about asian oriental food? Question: Who has spoken the sentence 2? (A) User (B) System

Ex Output:
Answer: (A) User

Ex Input:
Sentence1: Booking was successful for Tuesday. Your Reference number is : 0J3V1091 . Sentence2: I'm sorry that doesn't seem to be available would you like me to try a different day or guesthouse? Sentence3: I'm sorry, there does not seem to be a historical site or hiking area in Cambridge. Is there anything else I can help with? Sentence4: Sure, I can help you with that. What section of town were you looking for? Sentence5: Doesn't really matter if they offer either of those or not. I just want it to be a 0 star hotel. Sentence6: Then the city centre north b and b is what you want, shall I book you? Sentence7: i don't really care about the area. Sentence8: I want to see local sights, can you help? Sentence9: I like hiking and seeing historical sites. Sentence10: Okay. Are you interested in hotels that offer internet and/or parking? Sentence11: Yes, I would like to find a hotel in the cheap price range? Sentence12: Yes, a guesthouse is fine. I was looking for zero stars and in the cheap price range. Sentence13: Great, thanks. I don't need anymore help. Goodbye! Sentence14: Yes, please book it for me. Sentence15: I'm sorry, I seem to be having an error in my system. You want a booking at the citycentre north B&B for 6 people, 5 nights, on Monday? Sentence16: I'm also looking for somewhere to go. Perhaps the college. Can you tell me the postcode for the college? Sentence17: City Cenrtree North and B is a cheap hotel,would you like me to book it for you ? Sentence18: Let book the same but on Tuesday instead. Sentence19: I'm happy I could help today. Goodbye! Sentence20: There are 18 colleges in town. I recommend christ's college in the centre. The postcode is cb23bu. Sentence21: Yes, there is a wide variety, do you have an activity type that your are interested in? Sentence22: Yes please, 6 people for 5 nights and we would be arriving Monday. Question: Who has spoken the sentence 21? (A) User (B) System

Ex Output:
Answer: (B) System

Ex Input:
Sentence1: I have booked the hotel for you. The reference number is FMTZQOT2 . Is there anything else I can help you with? Sentence2: I would like an expensive guesthouse, please. Sentence3: I'm not showing any expensive guesthouses. Would you like me to search for guesthouses that are moderately priced? Sentence4: Yes, I am looking for Indian in the centre. Sentence5: Ok I will book it for you Sentence6: Yes, there are two. Alexander bed and breakfast and el shaddai. Would you like me to book one of those for you? Sentence7: At the el shaddai. Sentence8: No, I am afraid I am not showing any expensive guesthouse in the centre? Would you like to change your search? Sentence9: How many people in the taxi? Sentence10: I need a table for 2 people. Sentence11: i can book el shaddai for you. how many nights will you be staying? Sentence12: Where would you like the taxi to pick you up? Sentence13: I need a table for the same group of people and the same day. Sentence14: Are there any expensive guesthouses in the centre with free parking? Sentence15: There are 110 restaurants in the city. Are you looking for a particular area or cuisine type? Sentence16: I am not seeing that restaurant listed, is there a different one you might like to book? Sentence17: I would like to be picked up at my hotel and I need to be taken to the restaurant by 16:30. Sentence18: Thank you. I will also need a taxi to go between the two places. Sentence19: yeah, let's do el shaddai. Sentence20: Can you book it for me and get a reference number ? Sentence21: Ok great. A restaurant has not been discussed yet. Would you like to book a table? Sentence22: Would you like me to reserve a table for you? Sentence23: How about cheap with the same criteria? Sentence24: Please book the el shaddai for sunday, 2 nights, 2 people. Sentence25: What day would you like this reservation made for? Sentence26: There will be 2 people. Question: Who has spoken the sentence 17? (A) User (B) System

Ex Output:
Answer: (B) System