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: No but I would like the phone number. Sentence2: You're very welcome! Have a great day! Sentence3: We have La Tasca, at 14 - 16 Bridge Street. Would you like a reservation? Sentence4: Awesome. Can you give me some information on local theatres? Sentence5: There are some entertainments available do you want the information? Sentence6: The phone number is 01223464630. Is there anything else I can help you with? Sentence7: I was unable to find any in that area, do you have any other place you'd like to try? Sentence8: That is all, thanks. Sentence9: I'm interested in getting some entertainment later. Sentence10: Can you give me the address, phone number, and entrance fee info for the one in the south? I also need a restaurant that is moderately priced in the centre. Sentence11: Thank you. Can you help me find a moderately-priced Latin American restaurant in the centre? Sentence12: The theatre is called, The Junction. It is located at Clifton Way, cb17gx. The phone number is 01223511511. I'm not sure if there is an entrance fee or not. Sentence13: Actually, let's try another kind of food. How about spanish? Sentence14: There are 5 theatres one in the south and 4 in the centre. Is there an area you prefer? Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User