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: I would like chinese food please? Sentence2: Yes I would like to book it for 6 people for 3 nights staring from Thursday and would like a reference number after doing so. Sentence3: I have booked the hotel for you. The reference number is S770N2F9 . What kinds of restaurants are you hoping to try? Sentence4: I have made your reservation for 6 people at 14:00 on Thursday for Charlie Chan. Your reference number is 3QUDNYHJ . Is there anything else I may assist you with? Sentence5: I found several all over town. I can narrow the options down based on what part of town you prefer. Sentence6: book at table for 6 at 14:00 on thursday, please. Sentence7: that sounds good to me. i want you to book it for me Sentence8: I'm coming into town and want to try local restaurants and am looking for a hotel called Bridge Guest House. Do you know where this place is at? Sentence9: I need the reservation for 6 people at 14:00 please. Sentence10: Thank you. That is all I need. Sentence11: I have 10 restaurants available. What price range would you prefer? Sentence12: Okay. I need to know the day, time, and number of people you would like to book a reservation for? Sentence13: I would like to be in the centre Sentence14: A cheap place please. Sentence15: Okay. I've booked a taxi for you. It'll be a yellow lexus and the contact number is 07801886354 Sentence16: Thanks for letting us assist you! Enjoy your visit! Sentence17: What day would you like the restaurant for please? Sentence18: yes it is located in 151 hills road. anything else? Sentence19: how about charlie chan? sounds lovely. Sentence20: Yes I need a taxi leaving the hotel for the restaurant a little before 14:00. Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System