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: No area does not matter. Sentence2: Great news! I have four restaurants. Do you have a certain area that's more convenient? Sentence3: How about an Indian restaurant, then? Sentence4: How many people and at what time? Sentence5: I would accept one with moderate price range. I also need free parking. Sentence6: I would like a booking at 13:00 for 7 people for Friday. Sentence7: WELL THE ACORN GUEST HOUSE HAS FREE INTERNET AND PARKING, POSTCODE IS CB41DA Sentence8: I didn't find any results matching your criteria. Would you like me to find another restaurant? Sentence9: Yes I will book it for you and get a reference number ? Sentence10: I would choose Curry Prince. When would you like to dine? Sentence11: Yes, please. I need a place to stay. Sentence12: Booking was successful. The table will be reserved for 15 minutes. Reference number is : L6V4VV8Q . Can I help with anything else? Sentence13: Sorry, I don't have anything matching that description. Would you like me to check for a hotel instead? Or change the area or price range? Sentence14: I am looking for a place to dine at that serves afternoon tea and that is moderately priced. Please help. Sentence15: Well I have moderately priced restaurants in the east, north and west. Would you lie me to choose for you? Sentence16: I need a taxi also for the commute between both places Sentence17: I would like expensive. Sentence18: We have plenty to choose from, what preferences do you have? Sentence19: I have 7 guesthouses that meet your criteria. I recommend the home from home. Would you like me to book it for you? Sentence20: That would be great. There will be 7 of us. Sentence21: Ok great, and what time do you prefer? Sentence22: No thank you. I just need to know if they have free parking and the postcode. Sentence23: i need a table reserved for friday Sentence24: it should be a guest house in the north Sentence25: Okay! What price range would you like? Sentence26: 18:00 pm and can you book it for me ? Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User