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 sounds fantastic! Thank you! Sentence2: Do they serve Christmas food? Sentence3: Anything else I can look up for you? Sentence4: Yes, what is the entrance fee and could you find me a restaurant in the moderate price range located in the centre town? Sentence5: There is the pizza express and the pizza express Fed Ditton. Would you like to book either one of these? Sentence6: It is free to enter, and would you like to eat at The Oak Bistro located at 6 Lensfield Road? Sentence7: No, I'm sorry, the serve British style cuisine. Are you still interested? Sentence8: Not in British food. Are there any that serve Italian food? Sentence9: Certainly, lynne strover gallery 23 high street, fen ditton, phone 01223295264 free to enter. Any other questions I can answer? Sentence10: Not a problem! I was glad to be of service. Thank you and have a great day! Sentence11: The number is 01223324033, is there anything else I can do? Sentence12: That is all. Thanks for your help. Sentence13: I'm looking to visit the Lynne Strover Gallery. Sentence14: Could you just give me the number for pizza express. Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System