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: There are 5 such restaurants. What area of town would you like? Sentence2: It really doesn't matter. Sentence3: I'm looking to get to Cambridge on Sunday by 10:45 Sentence4: There are 5 restaurants that fit your criteria, 4 of those appear to be pizza places. Does that sound okay with you? Sentence5: what is a good tourist spot? Sentence6: We have a wide variety of restaurant choices! The options range from Asian Oriental, European, and French. I can give you information on any of those choices if you want. Sentence7: Booking was successful for the Pizza Hut Cherry Hinton, located at G4 Cambridge Leisure Park Clifton Way Cherry Hinton. Your reference number is ZYOHEW6U . Sentence8: There is one that arrives by 9:58 TR1526 if that works for you. Sentence9: I have several trains available. Is there a particular time you would like to leave or arrive? Sentence10: I'm very sorry that time is not available at any of the 5 restaurants, would you like to try a little earlier or later possibly? Sentence11: Great that's all I needed, thanks. Sentence12: The booking was successful. Your reference number is E9GWV6VS . Is there anything else I can help you with today? Sentence13: Lovely. Enjoy your trip! Sentence14: Yes. Could you make a booking for 2 people? I need a reference number as well. Sentence15: Actually, I was looking for italian food in the moderate price range. Sentence16: I am looking for a train that departs kings lynn on sunday. Sentence17: Go ahead and choose the one you recommend and book me a table for 2 on Sunday at 14:15. Thanks. Sentence18: Is 13:15 available? Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System