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: Peking restaurant is expensive chinese food in the south area. The address is 10 Homerton Street City Centre. Would you like me to make reservations for you? Sentence2: Yes, I need to take a train from Kings Lynn on monday, can you help me? Sentence3: The price for this train is 9.80 pounds.The departure time is at 15:11 and the trip is a total of 47 minutes. Sentence4: I need to arrive in Cambridge by 16:00. What are my options? Sentence5: Your table has been booked for 4 people on Monday. Reference number is Z7TQCT8F . Is there anything i can help you with today? Sentence6: Can I have the price, travel time, and departure time for the TR1863, please? Sentence7: Thanks. I'm also looking for Peking Restaurant. Sentence8: Thank you! Will you please book a table for 4 people at 20:30 on the same day? Sentence9: I hope you have a good stay in town. Please feel free to call back with any questions. Goodbye. Sentence10: We have 19 trains going that route monday the first departure is at 05:11AM and going hourly from there, what time did you have in mind? Sentence11: There are two that arrive closest to your requested time; TR2257 arrives by 14:58 and TR1863 arrives by 15:58. Would either of those work best for you? Sentence12: That will be all. Thank you. Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User