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: No I just need to make sure I get there by 15:00. I will need the train ID and departure time please. Sentence2: Yes it's an Indian restaurant in the east at the moderate price range. Would you like the address and phone number? Sentence3: Hi, I'm going to be visiting soon, and I am interested in trying a restaruant called Curry Prince. Could you give me more information about it? Sentence4: I have several trains available. What is your destination and preferred time of departure and arrival? Sentence5: There is a train leaving at 13:17. Would you like me to book the train for you? Sentence6: The train should go to cambridge and should arrive by 15:00,can you book it for me ? Sentence7: Is there a time you would like to leave by? Sentence8: No problem! I got that booked for your party of five. The reference number is JVGYC33Y . Do you need anything else? Sentence9: I am also looking for a train. It should should depart from London Kings Cross and should be on the same day. Sentence10: I just need the train's departure time and ID. Sentence11: Ok I will book it for you Sentence12: No but I would like to make a booking for 5 people at 18:30 on sunday. Sentence13: OKay perfect do you think you could book that for me please? Sentence14: Okay, the TR1688 leaves at 13:17. Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User