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: It doesn't matter. Can you just recommend one for me? Sentence2: Yes, may I please get Magdalene College's phone number? Sentence3: From what location? Sentence4: The magdalene college is nice. It is free to enter. Would you like more information on it? Sentence5: Sorry, I didn't pull up any results. Would you like me to check surrounding areas? Sentence6: I also need a train going to peterborough. Sentence7: Ok I will book it for you Sentence8: I'm looking for some places to go in town. Can you help me find a swimmingpool in the west. Sentence9: Cambridge will be the departure place. I'd like to leave after 10:45 on Sunday. I'll need the travel time, arrival time, and Train ID please. Sentence10: Yes, their phone number is 01223332138. Can I help you with anything else today? Sentence11: i have found five. would you like info for the 3 free or the 2 that cost 2.50 pounds? Sentence12: No. Instead of swimming I think I will go to college. Any of those around here? Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System