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: It is an expensive restaurant located at 22 Chesterton Road Chesterton. What else would you like to know? Sentence2: Sure, I can help you with that. Was there a particular area of town you were looking for? Sentence3: Thank you for calling. Sentence4: Yes can you please book that for me? Sentence5: Great, thanks so much! Can you please book me a taxi from the restaurant to the attraction, leaving the restaurant by 15:30? Sentence6: What type of food would you like? Sentence7: I am looking for an Italian restaurant if available Sentence8: I need the name of the restaurant Sentence9: restaurant two two is a french restaurant in the north. Would you like me to book that for you? Sentence10: Just the postal code and phone number please. Sentence11: The riverboat georgina is in the north and great fun. The address is cambridge passenger cruisers, jubilee house, postcode cb43ax. Do you need more information? Sentence12: I am sorry but there are no restaurants matching your request. Would like to try another part of town? Sentence13: I have booked the taxi it is a red volvo with contact number 07626130412. Sentence14: No but I would love it if you could find me something fun to do in the same area, maybe something boat related. Sentence15: Yes when would you like to book? Sentence16: I'm sorry, I'm actually looking for a restaurant that serves cuban food in the North. Sentence17: how about a french restaurant? Sentence18: The postal code is cb43ax and the phone number is 01223351880. Would you like me to book the restaurant for you? Sentence19: Actually, I just need a little more information. I don't need to book right now. What is the price range for this restaurant? Sentence20: Have a nice day. Sentence21: I am looking for a restaurant. Sentence22: It's a french restaurant, Two Two, I believe. Question: Who has spoken the sentence 20? (A) User (B) System
Output: 


Answer: (A) User