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: Great thank you, I am also looking for an expensive Indian place to eat Sentence2: Sorry, I don't have that information. You can call them to find out. 01223332138 and 01223312112 are the phone numbers. Sentence3: That's great. What time does each attraction open? Sentence4: I'm sorry, but you'll have to book at another time slot. What other time slot would you like to book at? Sentence5: I will need to arrive at Tandoori Palace by 12:30 please. Sentence6: No problem. Your table is booked at 12:30 on Wednesday. Sentence7: Hi, I am interested in finding attractions on the west side of town. Sentence8: I would prefer to eat in the same area as Cafe Jello Gallery. Sentence9: I have confirmed your booking a white audi will be picking you up. Their contact number is 07621830686. Do you need help with anything else? . Sentence10: Cafe Jello Gallery is a museum. There are 22 Indian restaurants in Cambridge, do you have a preferred price range or area? Sentence11: Your reference number is SRC2I813, your table will be held for 15 mins. Is there anything else I can assist you with? Sentence12: Could you please tell me what time you want to leave or what time you want to arrive so I can book the taxi for you? Sentence13: Sounds great! Could I book a reservation for 6 people at 13:30 on wednesday? Sentence14: Yes. I need a taxi to take me from the museum to the restaurant. Sentence15: Can you tell me what type of attraction Cafe Jello Gallery is please? I also want to find an indian restaurant. Sentence16: Okay great. Glad i could be of help. Sentence17: I've got 14 expensive Indian restaurants. Is there a particular part of town you'd like to eat in? Sentence18: No, I think that's everything. Thank you so much. Sentence19: Okay, how about the Tandoori Palace? It's in the same area. Sentence20: How about Magdalene College and Cafe Jello Gallery (13 Magdalene St), both free and on Magdalene St? Sentence21: Let's try 12:30 then. Sentence22: What is the reference number for the reservation? Question: Who has spoken the sentence 17? (A) User (B) System
Output: 


Answer: (B) System