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 prefer Chinese. Something is the expensive price range Sentence2: The Cambridge Belfry is hotel in the west, within the cheap price range. What information on the hotel would you like? Sentence3: Yes. the cambridge belfry offers free parking. Is there anything else I can help you with or would you like me to book it? Sentence4: On Friday. I also need a 4 star hotel in the west. Sentence5: I actually preferred moderate, but lets go with the expensive option. Sentence6: Hakka is located on Milton Road, Chesterton, cb41jy. When would you like your reservation? Sentence7: Ok, I've booked you a taxi from the hotel and restaurant. It will be a red volkswagen. the contact number: 07761073818 Sentence8: No, thanks, but I do need a taxi between the hotel and the restaurant, leaving the hotel at 23:15, please. Sentence9: Thank you,thats all I need today. Sentence10: We have one in the cheap and one in the expensive range. Which would you prefer? Sentence11: Thanks for contacting us! Sentence12: do they offer free parking? Sentence13: I'm sorry, I've checked my budget and really need to go with the cheap hotel. Could you just give me the information on that one? No booking today. Sentence14: I'd like to get the address and postcode. Yes, I'd like a reservation please. This place sounds great. Sentence15: Hello I'd like to get some information on a place to eat in the north side of Cambridge. Sentence16: Hutington Marriot is an expensive 4-star hotel on Kingfisher Way. It's phone number is 01480446000. Should I book that for you? Sentence17: I would suggest the hakka it is chinese in the north and is expensive. Would you like to make reservations? Sentence18: We have 9 restaurants to chose from. There are Italian, Indian, French, Chinese, European and Asian Restaurants. What sound good to you? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User