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: That is free to enter. Sentence2: I think so. Can you give me the travel time and price for TR5266? Sentence3: Yes, I'm looking for a museum in the center of town. Sentence4: I was wondering if there is a French restaurant here in Cambridge? Sentence5: Alright then. Have a wonderful day. Sentence6: The train departs at 15:00 and the price is 23.60 pounds. Sentence7: Great, thank you, I think that's all I need. Sentence8: That sounds interesting. What is the entrance fee for the museum? Sentence9: I see. TR5266 arrives by 15:51. Will that be sufficient? Sentence10: I'm also looking for a train to London Kings Cross. Sentence11: There are plenty of trains that will take you to London Kings Cross. May I ask what day and time you would like to take this train? Sentence12: There are 11 museums in the centre area. There is Cambridge Contemporary Art. Is that acceptable, or do you have other criteria? Sentence13: I'm sorry, but there seems to be an error. Can you please restate your request? Sentence14: I want to leave Thursday and arrive by 16:00 Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System