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: TR7727 will arrive at 14:56. Would you like to book tickets on that train? Sentence2: Thank you for the information. Sentence3: I am interested in visiting Saint Catharine's College. May I have the postcode, please. Sentence4: I'd like some entertainment. Sentence5: No entertainment attractions in the center unfortunately. I usually recommend the funky fun house on the east side of town Sentence6: Not right now. I am just getting information together. Thank you. Sentence7: What about a college? Sentence8: The post code is cb21r1. Sentence9: Have a nice day. Sentence10: Yes, I am also looking for an entertainment place to go in town. I'd like it to be in the centre if there happen to be any. Sentence11: There are lots of wonderful colleges in the centre. There's Trinity College of course, but others such as Saint Catharine's College are also nice. Do you want to know more? Sentence12: I need to find a train that leaves Cambridge and that should arrive by 3:00 PM. Can you help? Sentence13: Where is the destination, please? Sentence14: The destination is Peterborough. I'll be going there on Tuesday. Sentence15: Can I help you with anything else today? Sentence16: What type of attraction would you like? Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System