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 couldn't get you a table at Dojo, I can get you one at J Restaurant, if you want? Sentence2: Booked! Your table will be reserved for 15 minutes. Reference number: F10EIGQ3 . Sentence3: Yes. Please book me a table at the dojo noodle bar for 7 people at 19:00 on wednesday. Sentence4: Okay great. Thanks for calling and enjoy your dinner. Sentence5: Yes I found 2 cheap asian oriental places to eat. The dojo noodle bar and j restaurant. Would you like me to book a table for you? Sentence6: That was all thank you. Sentence7: That works. Same parameters, please. I need the reference number too. Sentence8: Do you need anything else? Sentence9: I am sorry, I do not have any cheaply priced British restaurants in the city. Would you like a different type of food or maybe a different price range? Sentence10: Great thank you for all your help. Sentence11: Do you have any Asian Oriental restaurants in the same price range? Sentence12: I need assistance finding a restaurant that is cheap and serves british food, can you help me? Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System