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: Of course! To book a taxi, I'll need to know your destination, departure site, and what time you would like to leave or arrive by. Sentence2: I would like free wifi. Sentence3: Have you b ooked that yet? I need the reference number. Sentence4: Is there a cheap italian food restaurant? Sentence5: From the hotel discussed. Sentence6: Hello, are you still there? Its been a few minutes. I'm kind of in a hurry, is there a problem with the booking? Sentence7: Then I would recommend the Golden Wok. Would you like to book a reservation? Sentence8: I want to arrive at da vinci pizzeria by 15:00. Sentence9: The Avalon may be a good choice. Sentence10: da vinci pizzeria is cheap, shall I reserve a table for you? Sentence11: I'm sorry, I think I'm spending too much money on this trip. Can you look for a cheap restaurant in the north that serves barbeque? Sentence12: You are more than welcome. Sentence13: I will go ahead and book that for you. Sentence14: They do not. They are a Chinese restaurant. Would you like me to find a barbecue place? Sentence15: Sure, I can help you with that. Did you have a price range in mind? Sentence16: Do they serve barbeque food? Sentence17: Great, I will book that for you now. Sentence18: Is that a guesthouse? If so, can you book me a room for Sunday for 5 people, 2 nights? Sentence19: Okay! From where are you departing? Sentence20: sorry i was trying to make sure i book the right was. it is now booked.Reference number is : D5LV4L6Y . Sentence21: i also need to use a taxi Sentence22: There are 5 guesthouses and 0 hotels that fit your criteria. Do you require parking or a specific price range? Sentence23: Moderate price range thank you Sentence24: I am also looking for a place to dine, in the same area as the hotel. Sentence25: Of course. The reference is W7KCVTHJ . Is there anything else I can help you with? Sentence26: Hello, I am in need of a 4 star place to stay in the north,please. Sentence27: It is. Reference number is : W7KCVTHJ . Anything else? Sentence28: Thank you for all your help. Sentence29: Yes please, 5 people, 15:00 on sunday please. Sentence30: I am sorry but there are no cheap, barbecue restaurants in the north. Do you want another cuisine or area? Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User