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: Thanks so much, that is all I need. Sentence2: Are there any entertainment attractions in the south? Sentence3: Can I have the address, phone number, and entrance fee of Nusha. Sentence4: Thank you, goodbye. Sentence5: i also want a taxi to commute between the 2 places Sentence6: Your table is reserved, ref#39W1D7PP . Can I help you with anything else today? Sentence7: Is it in the same area as Nusha? Sentence8: I've booked you a taxi from nusha to the lucky star, arriving at 14:00. The car will be a white bmw. Contact number : 07301865482 Sentence9: I would like a chinese restaurant, please. Sentence10: Could you book me a table on Thirsday. 2 people at 14:00 Sentence11: There are two that fit your request. One is Nusha on Clifton Road and the other is Tenpin on Clifton Way. Do you need more information? Sentence12: Yes it is in the same area. Sentence13: There are 15 that I have found! What type of cuisine would you like? Sentence14: Thank you, you too. Sentence15: I will go ahead and book that now. Sentence16: Okay, great. Have a nice day. Sentence17: I can call for that. But thanks anyway. I am also looking for a cheap place to eat. Sentence18: Thank you. Can I please have the reference number? Sentence19: The address of Nusha is unit g6, Cambridge leisure park, Clifton road and their telephone number is 01223902158, but unfortunately, I do not have information on their entrance fee. Sentence20: There is one cheap Chinese restaurant in the area called The Lucky Star. Would you like me to book a reservation for it? Question: Who has spoken the sentence 19? (A) User (B) System
Output: 


Answer: (B) System