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: Cambridge has several centrally located Indian restaurants, what price range are you looking for? Sentence2: Fantastic. That is all I need. Sentence3: There are 3 restaurants in this range. Kohinoor on Mill Road, the gandhi on Regent Street, and mahal of cambridge on Millers Yard Mill Lane. Do any of these sound good? Sentence4: Thank you for using our service, contact us anytime you need assistance in the future! Sentence5: In the cheap price range. Sentence6: I just need it to leave after 13:30. Can you tell me the train ID, price, and travel time for the first train after 13:30? Sentence7: I would like the reservation at 14:00 on Wednesday. Sentence8: Sure - TR9360 departs cambridge at 14:01, arriving birmingham new street at 16:44. The total travel time is 163 minutes, and the price is 75.10 GBP per ticket. Sentence9: OK, you have a table for 2 at The Gandhi on Wednesday at 14:00. Reference number is : C64LQ6ZX . Can I be of further assistance today? Sentence10: The Gandhi sounds good. Can you book that for 2 people please? Sentence11: There are 19 trains that day. Do you have a preferred arrival or departure time? Sentence12: What day and time would you like your reservation? Sentence13: Can you tell me the location of an Indian restaurant in the centre? Sentence14: Yes. I need to find a train from cambridge to birmingham new street on thursday. Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System