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: Find me a train that leaves after 11:00 on Wednesday Sentence2: No problem! Have a great day. Sentence3: Great thanks. That's all I need. Sentence4: Yes please. I need the travel time. Sentence5: I would like the address and phone number. Sentence6: Located at 98 king street. Number is 01223314960. Sentence7: No, I think you've answered all my questions. Thank you! Sentence8: The Broughton House Gallery is a free museum located in the centre. Would you like more information about it? Sentence9: Not right now, thanks. I would like to go to a museum while I'm in town, though. Sentence10: I'll be leaving cambridge with a destination of stevenage. Sentence11: No, any area is fine. Can you suggest one? Sentence12: ok, and what is your destination? Sentence13: The earliest train after that time is TR3844. It departs at 11:21 and arrives in Stevenage at 12:10. Would that work for you or would you like a later train? Sentence14: It is a 49 minute ride, it will cost 12.80 pounds. Would you like me to make reservations for you? Sentence15: Were you looking for one in a particular area? Sentence16: Do you need me to look up info about another place or attraction? Anything? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System