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: Yes I also need to book a train for 3 people on Thursday between Bishops Stortford and Cambridge arriving by 09:00. Sentence2: How about the moderately priced Rosa's Bed and Breakfast? I also have 22 other entries, if you would prefer something else. Sentence3: Hello, I am looking for a place to stay in Cambridge. Sentence4: I can help with that. Do you have an area of town, or a price range in mind? Sentence5: Yes I most certainly can! I have booked you into the Rosa and your reference number is 06D0FC6L . Sentence6: It was my pleasure. Safe travels! Sentence7: I have a 7:29 that gets into Cambridge at 8:07. I booked three people on this train per your instructions. The total cost is 30.29 pounds and your reference is 9AR1CBJM . Sentence8: I would like a guesthouse type but the price range is not as important. Sentence9: Thank you very much for your help today. Sentence10: There are 32 hotels that have free wifi. Do you have any preference of price range or area, or should I choose one for you? Sentence11: Ok, almost all of the hotels have free wifi, do you have a star rating you would like? Sentence12: Rosa's Bed and Breakfast sounds fine. Can you book it for 3 people arriving on Thursday for 5 nights? Sentence13: I don't care. Sentence14: I'm not picky about the area of town or the price, but I absolutely need free wifi! Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User