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: I would like this train to be on the same day of the restaurant booking and arrive by 8:00. Sentence2: Booking was successful. The table will be reserved for 15 minutes. Your Reference number is : 4M02K9XY . Sentence3: I can book passage for you on TR5163, arriving in cambridge at 7:35 on Sunday. How many tickets do you need? Sentence4: I'm glad I could help. Have a wonderful day! Sentence5: There are two trains you can take, one leaves at 10:16 and arrives at 11:35, or there is one that leaves at 11:16 and arrives at 12:35. Sentence6: I would like to know the approximate travel time and price per ticket for this particular train. Sentence7: Thanks. Looks like that's all I need today. I appreciate your help. Sentence8: It costs 14.08 pounds per ticket, and the travel time is 79 minutes. Sentence9: Kymmoy is an asian oriental restaurant located at 52 Mill Road City Centre. It is in the expensive price range. Would you also like their phone number? Sentence10: sure, and could you book a table for 3 at 12:45 on sunday. I would also like the reference number as well, thank you Sentence11: I am looking for a train going to Cambridge departing from Norwich. Sentence12: Absolutely. Can you provide me with more specifics to narrow down your search? Sentence13: Thank you! Would you also be able to book a train for me? Sentence14: I'd like some information on a restaurant called Kymmoy, please. Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System