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: I need a hotel named University Arms, I need the star of this hotel and the postcode please. Sentence2: You're Welcome! Have a great day! Sentence3: No thanks, but I am looking for an expensive restaurant in the center of town. Can you tell me what's available? Sentence4: I have 4 different restaurants to choose from. If I might offer a recommendation, the Ugly Duckling is highly rated and has an excellent buffet option. Sentence5: Ok can we narrow our search a little. Where are you staying and what can you afford? Sentence6: would i book a table for 1 people at 13:30 on saturday please? Sentence7: How about a little earlier, say 12:30? Sentence8: I'm sorry, they don't have anything available then. Would you like me to try another day or time? Sentence9: There are 33 restaurants that match your preferences. What type of food would you like? Sentence10: Thank you very much. Goodbye. Sentence11: Booking was successful. The tabled will be reserved for 15 minutes. The reference number is: ZIEEXAYS Sentence12: I am looking for a hotel. Sentence13: The University Arms Hotel is a 4 star hotel in the centre of town, and their postcode is cb21ad. Would you like to make a reservation? Sentence14: I would really like chinese food please Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User