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: Their phone number is 01223902168. Their address is 5 Greens Road. Sentence2: You're very welcome. Have a good visit. Sentence3: I have a train that leaves at 16:21. Would you like a booking? Sentence4: That was all I needed today, thanks! Sentence5: Great! There is the TR8080 leaving Cambridge Friday at 11:21 and arriving by 13:06 in Leicester. Is that the one you want booked? Sentence6: OK, you have 1 ticket reserved on TR8080. The total fee is 37.79GBP, and your reference number is C317WKCR . Can I help with anything else today? Sentence7: Can I please book a train for Friday? Sentence8: Yes please and their address. Sentence9: Where will you be leaving from? Sentence10: Thanks. I am also looking for a place to go in town. Can you recommend your favorite museum? Sentence11: Yes please can you book me one seat on that train and let me know the reference number? Sentence12: I will be leaving from Ely no later then 17:00. Sentence13: I'm going to Leicester. Sentence14: Sure, what destination would you like? Sentence15: Sure, I am looking for a train going to Leicester that departs from Cambridge. It should leave after 10:30 on Friday. Sentence16: actually, i believe some incorrect information was entered. i have not trains from ely to leicester on friday after 17:00. let's verify what you're looking for. Sentence17: Yes please make the booking for me for one. Sentence18: Sure! I love the Cambridge Artworks in the east. It's on 5 greens road and is free admission. Would you like their phone number? Question: Who has spoken the sentence 17? (A) User (B) System
Output: 


Answer: (B) System