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: Okay great! Your booking was successful. Your reference number is HMUH9F2T . Sentence2: I would like a place in the centre of town, serves Indian food and on the expensive side. Sentence3: I am also looking for a hotel called the University Arms Hotel. Sentence4: The Curry Garden is an expensive restaurant located at 106 Regent Street City Centre. Their phone number is 01223302330. Would you like me to book a reservation for you? Sentence5: Great, can I also get a taxi as well. Sentence6: I found it. Would you like me to book a room for you? Sentence7: Certainly! Is there any particular place you would like the Taxi to pick you up? Sentence8: Great, thank you for using our system! Sentence9: Not at this time but your help has been appreciated. Sentence10: Yes, I would like to book 5 nights starting Wednesday for 6 people. May I also have the reference number please. Sentence11: Sure thing. Their contact number is 07128800156. Is there anything else I can help you with? Sentence12: OK, we can get you a Blue Honda at 17:00 from the restaurant to the hotel . Sentence13: There are 110 place to dine in Cambridge. May I narrow the search by area, price range, and/or cuisine? Sentence14: You're welcome. Have a great rest of your day! Sentence15: I am looking for a place to dine in Cambridge Sentence16: I will call them, thank you for your help. Sentence17: Great, thanks. Could you give me their contact number? Sentence18: Yes from the restaurant to my hotel. I need to leave the restaurant by 17:00. Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User