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 thanks. I also need an expensive place to stay that has free parking. Sentence2: Yes, this restaurant is found on Trumpington Street in the centre. Sentence3: Your room has been booked. The reference number is 6N17JECV . Sentence4: Is that found in the center? Sentence5: I'm afraid there isn't a guesthouse that meets all of those requirements. Are they all important to you? Sentence6: The Bridge Guest House sounds fine. I'll need it booked for Wednesday, 4 nights, and 8 people. Sentence7: Thank you so much for calling Cambridge TownInfo centre! We hope you enjoy your time in Cambridge! Sentence8: Hey, I'll be in Cambridge and I'm curious about the local restaurants. Can you find me a moderately priced one that serves European food? Sentence9: Sure, how about the Hotel Du Vin and Bistro? Sentence10: Sure, do you have a part of town you prefer for this? Sentence11: I don't have a preference. As long as it has free wifi and is a guesthouse. Sentence12: The phone number is 01223227330, the postcode is cb21qa and the address is 15 - 19 Trumpington Street. Would you like me to reserve a table? Sentence13: That is all I need. Thank you. Sentence14: Can you find me a moderately priced one? Sentence15: There are actualy 12, but I recommend bridge guest house, would you like more info or a booking? Sentence16: Can you please give me the address and postcode and phone number? I want to jot this down in case I get lost. Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User