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: Sure. It's located at 732-734 Newmarket Road. Can I help you with anything else? Sentence2: I'm looking for a hotel called the Leverton house. Can you help me find it? Sentence3: The car will be a yellow toyota and their number is 07865026456, is there anything else you need? Sentence4: Does it have an entrance fee? Sentence5: Okay I also need a taxi that will leave the attraction by 08:45. Sentence6: I am also looking for places to go in town. Maybe something in the south. Sentence7: No, I think that will be all. Thank you for your help! Sentence8: There are several places to go in the south. Are you interested in cinema, entertainment, musuem, a nightclub, or perhaps something else. Sentence9: Thank you very much. Sentence10: That information is not available to me. The phone number is 00872208000. Sentence11: Cineworld Cinema is a great place to visit. It's located on the south side at cambridge leisure park, clifton way. Is there anything else i can help you with? Sentence12: Yes, please give me the reference number. Sentence13: Yes. I would like to book it for four nights, starting Sunday. Five people. Sentence14: Thanks and enjoy your time ! Sentence15: Booking was successful! Your reference number is. PIKSVFZT Sentence16: You're welcome. Have a great day! Sentence17: How about a cinema? Sentence18: Will you be needed a reference number for the booking? Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System