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: You are welcome. Please comeback if we can do anything more for you! Sentence2: Currently planning to come out there but need to find a train that leaves after 15:30 and that will depart from Norwich. Sentence3: My pleasure. Enjoy your time in Cambridge. Goodbye. Sentence4: Yes, wandlebury country park is located at wandlebury ring, gog magog hills, babraham, with phone #01223243830. Would you like any other information? Sentence5: What day do you want to travel on? Sentence6: That is all that I needed. Thank you so much for the assistance. Sentence7: Al set, your reference number is ZIY4Y3CA, the cost is 17.60 pounds per person payable at the station. Sentence8: Yes. I will need two tickets. Sentence9: I would like to leave on Monday. Sentence10: I do not have a train that leaves by 15:30 on that day but soon after at 16:16. Would this work for you? Sentence11: Can I also get information on wandlebury country park. Sentence12: I will. Thanks again. Good-bye. Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System