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: Sure. Where are you departing from? Sentence2: TR7935 leaves at 21:16 and arrives by 22:35. Is that okay? Sentence3: There are 5 different nightclubs in that area. Might I suggest Ballare. Would you like more info? Sentence4: I'm leaving from Norwich and would like to leave after 12:15, please. Sentence5: I think I would like a nightclub in the centre of town please. Sentence6: There are twelve possible trains leaving after 12:15. Should I book you on one of them? Sentence7: Cambridge has over 70 delightful attractions, what type appeals to you most? Sentence8: You are booked for two tickets, Reference number is : RJOUA7E1 . Sentence9: I am sorry. I need the train to leave after 21:15 from Norwich. Are there any available? Sentence10: That was everything I needed. Thank you very much for helping me. Sentence11: You are welcome, goodbye. Sentence12: I need the address, entrance fee, and phone number. Sentence13: That sounds good, I will need 2 tickets please and a reference number. Sentence14: The address of Ballare is heidelberg gardens, lion yard. The phone number is 01223364222. The entrance fee is 5 pounds. Sentence15: I am also looking for places to go in town. Sentence16: I'm looking for train that go to Cambridge that leaves on Tuesday. Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System