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: The hamilton lodge is moderately priced and has 3 stars. Would you like to make reservations? Sentence2: Really makes no difference to me as long as its on the North side of town Sentence3: I need to find a train leaving Cambridge and going to Ely. Can you help? Sentence4: The train leaves ely at 19:50. Would you prefer a guesthouse or hotel? Sentence5: no that is all thanks Sentence6: There is the TR6053 that arrives by 20:07. Do you want me to book it? Sentence7: Can you confirm if the hamilton lodge has both free parking and free wifi? Sentence8: Yes, the hamilton lodge has free parking and wifi. Would you like me to book? Sentence9: You can book TR6053 since it is only a 17 minute trip. Thank you Sentence10: I will take any suggestions you have. Sentence11: You are welcome. It was a pleasure serving you from Cambridge TownInfo centre. Goodbye. Sentence12: I have about 11 different places so far. Do you have a certain price range in mind? That may help narrow it down some. Sentence13: No, not today. I just needed information. Sentence14: I can help! There are many options Sentence15: No problem, anything else besides the hotel and train today? Sentence16: I need to leave on Friday and arrive by 21:45. Sentence17: What's the travel time on that one? Sentence18: What time does that train leave Cambridge? I also need a place to stay in Ely, with free parking and free wifi? Question: Who has spoken the sentence 15? (A) User (B) System
Output: 


Answer: (B) System