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: Italian food sounds good as well, how about that? The area and price must stay the same. Really anything is fine I don't care. Sentence2: christ's college is a beautiful college. You would love it ! Sentence3: I'm sorry but I have no Chinese in this area. Could we try another area or type of food? Sentence4: Great, may I please have the address? Sentence5: It does not matter. Sentence6: Okay! What part of town would you like to visit? Sentence7: could you provide some information about the colleges you have in town? Sentence8: Christ's college is in the centre of town. Their address is saint andrew's street Sentence9: Thanks. That is all I need for today. Bye. Sentence10: Bye, have a good time. Sentence11: Well then find me another type of expensive restaurant. Book it for 1 person for Saturday at 14:30. Sentence12: I'm sorry, there are no expensive Italian restaurants in the area either. How about a cheaper option? Sentence13: Booking completed! Booked car type : grey skoda Contact number : 07328070350 Sentence14: We have 14 places with all kind of food type, any preference? Sentence15: Yes, I'll also need a taxi to commute between the two locations. I'll need to arrive at the restaurant by the dining time. Sentence16: Hm, I guess a chinese place would be good. Sentence17: Done! I have booked you a table at Travellers Rest, which will be reserved for 15 minutes. The reference number is 86LRTWFF . Can I help you with anything else? Sentence18: i am looking for a place to dine. The restaurant should be in the west and should be in the expensive book a table for 1 people at 14:30 on saturday Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System