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: All three also have free internet. Which area would you be interested in? I can help you book your stay. Sentence2: i want a place to stay Sentence3: Yes, I'm looking for a 3-star guesthouse in a moderate price range. I do need free parking, too. Sentence4: Can you tell me the name of the one that is in the west, because I am also looking for something to do in the west. Sentence5: you're welcome! bye! Sentence6: There are 3 guesthouses with that criteria available, one each in the south, north and west. Do you have an area preference? Sentence7: I'm not sure.. can you recommend something? Sentence8: Not right now. Can you help me find something to do in the west area? Sentence9: Did you want me to look up another college? Sentence10: What type of activities are you interested in? Musems? Parks? Colleges? Sentence11: No, I am all set. Thanks for your help. Bye. Sentence12: The name of the guesthouse in the west is hobsons house. Can I book that for you? Sentence13: No thank you. I just wanted to know what things there were to do. Visiting a a college sounds like fun. Thanks for all your help today. Sentence14: Churchhill College is in the West at Storey's Way and has no entrance fee. Shall I book that one for you? Sentence15: No but I need internet. Sentence16: There is a lot of choice. Do you have any preferences ? Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User