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: How many people? Sentence2: I need help with a particular hotel, can you do that? Sentence3: What day of the week will you need that? Sentence4: Thank you for using our system today! Sentence5: Does saturday work? Sentence6: We want to leave the hotel by 24:15. What is the contact number and car type? Sentence7: 8 people, for 3 nights. Sentence8: Thank you, that's all I need today. Sentence9: It's a museum located at 2-3 castle street on the west side of town. Postcode is cb30aq and the phone number is 01223355159. The entrance fee is 3.50 pounds. Sentence10: You have a booking for a black volvo at 24:15. Contact number, 07253606087. Sentence11: Can you specify a departure or arrival time? Sentence12: Okay your booking was successful and your reservation number is HKW4G2VT . Sentence13: Thank you. I'd also like to get a taxi between these two places. Sentence14: I'd like a hotel named Warkworth House, and am interested in booking for 8 people starting on Saturday. Sentence15: Yes, I have the database ready, do you want info on a specific hotel or a search? Sentence16: Could you give me information on Cambridge and County folk museum? Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System