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: Three are free: Churchill, at Storey's Way; Clare Hall, at Herschel Road; and Magdalene on Magdalene St. The others are 2.5P, Clare at Trinity Lane; and Queens' at Silver Street. Sentence2: Could you provide me with the address of each location including the entrance fee for them as well? Sentence3: The train departing closest to 12:15 is the TR3498, which leaves at 12:40. The duration of the trip is 163 minutes. Sentence4: Actually, I'm not looking for a hotel at all. I'm looking for a train on Thursday that is departing Birmingham New after 12:15 to Cambridge. Is there anything available? Sentence5: Yes also I am looking to visit one of the colleges on the wets side of town. Sentence6: I am hoping to book a 5 star hotel in cambridge that is expensive. What ones are available to book for next Thursday through Sunday? Sentence7: Anytime is fine by me. Can I have the train ID and travel time? Sentence8: I'm showing 5 colleges in the west end. 3 have free admission, 2 charge a 2.50 pounds fee. Sentence9: Twelve trains match your request. When do you want to arrive? Sentence10: I'm happy to help with that. Is there a particular area you'd like? What about amenities? Sentence11: I am glad I could help. Have a great day! Sentence12: Thanks you have been very helpful. That's all I need for today. Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System