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

Positive Example 1 -
Input: Sentence1:i need a place to dine in the center thats expensive Sentence2: I have several options for you; do you prefer African, Asian, or British food? Sentence3: Any sort of food would be fine, as long as it is a bit expensive. Could I get the phone number for your recommendation?Question: Who has spoken the sentence 2? (A) User (B) System
Output: Answer: (A) User

Positive Example 2 -
Input: Sentence1: Guten Tag, I am staying overnight in Cambridge and need a place to sleep. I need free parking and internet. Sentence2: I have 4 different options for you. I have two cheaper guesthouses and two expensive hotels. Do you have a preference? Sentence3: No, but I'd really like to be on the south end of the city. Do any of those fit the bill? Sentence4: Sure. Does price matter? We can narrow it down and find exactly what you need. Question: Who has spoken the sentence 4? (A) User (B) System
Output: Answer: (B) System

Negative Example 1 -
Input: Sentence1: I am looking for a hotel named alyesbray lodge guest house. Sentence2: i have their info, what would you like to know? Sentence3: I would like to book a reservation for it. Can you help me with that? Sentence4: I sure can. First, I will need to know when you want your stay to begin and how many days you'll be staying. Also, how many people will be staying? Question: Who has spoken the sentence 1? (A) User (B) System
Output: Answer: (A) User

Negative Example 2 -
Input: Sentence1: Hi there! Can you give me some info on Cityroomz?. Sentence2: Cityroomz is located at Sleeperz Hotel, Station Road in the Centre area. It is a moderatley priced hotel with a 0 star rating. Would you like to book a room? Sentence3: Yes please. I need it for 7 people for 3 nights starting on tuesday. Sentence4: How many days would you like to book it for? Question: Who has spoken the sentence 4? (A) User (B) System
Output: Answer: (A) User

Now complete the following example -
Input: Sentence1: I need help finding a place to stay. Sentence2: I get put you on the tr4698 and your arrival time will be 13:52, would you like a ticket? Sentence3: Is there a 3-star hotel or guesthouse in the north? The hotel doesn't need to include internet. Sentence4: Great! What can I help you with? Sentence5: Lets go with a guesthouse than Sentence6: Where will you be departing from? Sentence7: No, whichever you choose will be fine. I'll just need it booked for 4 people, 4 nights, and starting on Saturday. Sentence8: No, could you just give me the price and the departure time please? Sentence9: I am looking for information in Cambridge Sentence10: I'm sorry, but we don't have any 4 star hotels in the north. We do, however, have 2 hotels with a 2 star rating in that area. Will those do? Sentence11: Actually, can we look for a train first? I need to be in Cambridge by 15:15 on Saturday. Sentence12: Great, thank you! Sentence13: I have many places in cambridge. Do you have a price range? Sentence14: I don't care about the price. I just need it to be in the North part of town, and have a 4-star rating, please. Sentence15: There are 8, I recommend home from home guesthouse. They are moderately priced and offer free parking and internet. Would you like me to book it for you? Sentence16: I'm sorry. There are no hotels meeting your criteria. Would you like to try a different area? Sentence17: I am leaving from Ely. Sentence18: No, that's all. Thanks. Sentence19: Would you prefer a 4 or 3 star guesthouse? I'm sorry we don't have any hotels meeting your needs. The guesthouses are quality establishments though! Sentence20: What's your budget? could you like something cheap, moderate or expensive? Sentence21: Arriving at Acorn Guest House on Saturday and staying for 4 nights with 4 guests. Your Reference number is : 152CAPO9 . Sentence22: Is there anything else that I can assist you with today? Sentence23: I also need a hotel room. Sentence24: 4 star please Sentence25: I have 5 guesthouses that are 4 stars. Do you care which one I book? Sentence26: excellent, have a great day! Sentence27: The departure time is 13:35, and price is 3.52 pounds. Sentence28: I do not want a guesthouse. Question: Who has spoken the sentence 21? (A) User (B) System
Output: 


Answer: (B) System