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: OK, you're all set. Your Reference number is : P16OTKFH . Sentence2: What night and how many people are you needing this for? Sentence3: Yeah,I;m high maintenance, lol. Just a taxi from Saint Barnabas to the Express hotel. I'll leave by 13:00 Sentence4: Sure! The postcode is CB13EW. Is there anything else I can do for you? Sentence5: Does it have free wifi? Sentence6: No problem at all. I have you booked in a black Ford. The contact number is 07805617119. Anything else today? Sentence7: I'm looking for an expensive place to stay on the east side. Sentence8: That's all I need. Thanks! Sentence9: I appreciate your help. Thanks again. Sentence10: I have 4 museums in the east. May I suggest saint barnabas press gallery? It's free admission. Sentence11: yes for 5 nights please. Sentence12: Yes, it has internet would you like to book a room? Sentence13: Yes I think that will work, I need the postcode too. Sentence14: Thank you. What is the reference number? I'm also looking for places to go in town. Sentence15: Thanks. I am also looking for places to go in town. I would like to visit a museum in the east area. Can you make a recommendation? Sentence16: I am needing this for Sunday for 5 people, if the booking fails could you please book for 4 nights. Also can I have the reference number? Sentence17: Okay, I have found a match. The Express by Holiday Inn in Cambridge. Would you like me to book a room? Sentence18: Yes, let me book that for you. Question: Who has spoken the sentence 15? (A) User (B) System
Output: 


Answer: (B) System