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: That sounds good. Could you give me the arrival time and the travel time? Sentence2: I am departing Cambridge and going to Peterborough, on Tuesday please. Sentence3: Yes, please go ahead and book the tickets. Can I have the reference number as well? Sentence4: Thank you so much for all your help today. Sentence5: You're welcome. Goodbye Sentence6: I'm hoping to book a room for 8 people on Friday. We will be in town for 4 nights. Sentence7: Yes, what would you like to know about it? Sentence8: I was able to successfully book that for you. Your reference number is XUSQ4E7T . Is there anything else I can do for you today? Sentence9: I'm looking for a hotel called the a and b guest house. Can you help me out? Sentence10: No, that is all I will be needing. Thanks again. Bye. Sentence11: How about TR9522? It leaves at 09:34. Sentence12: Train TR9522 departs at 09:34 and arrives at 10:24. The travel time is 50 minutes. Would you like to book any tickets? Sentence13: Yes, I need a train that leaves after 9:30 Sentence14: I can help with that. What are your departure and arrival stations please? Sentence15: 7KKKCLIP is the reference number. Sentence16: Is there anything else I may help you with today? Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System