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: Your booking for the restaurant was successful. Your reference number is LOM2SXEF . It is on the same day. Is there anything else? Sentence2: thanks. i didnt realize the time. i need to go. but thanks for everything. bye. Sentence3: Yes, please. It'll be for the same seven people at 12:45 on the same day. Sentence4: Booking was successful. your Reference number is : 2AGDQCL1 . is there anything else i can help you with? Sentence5: I have several options what area do you want to stay in? Sentence6: Have a lovely day, goodbye! Sentence7: Can you please book it for me? Sentence8: Okay, I've reserved your taxi, a red toyota that will pick you up at the hotel. Please call 07100946060 to confirm pick up time. Sentence9: I want to stay on the south side of town in a 3 star hotel that also has free wifi. Do you have any suggestions? Sentence10: Taj tandoori fits all your criteria. Would you like me to book you a table? Sentence11: I am looking for a pricey place to stay. Please help me if you can. Sentence12: I'd like an indian restaurant in the expensive range in the south please. Sentence13: Sure, but I'll need some additional information. How many days shall I book for? When would you like to check in? Sentence14: The lensfield hotel fits your needs, would you like info or a booking? Sentence15: Sure thing what kind of food are you wanting? Sentence16: I am also looking for a place to dine near the hotel. Sentence17: I want to book it for 4 nights on a Thursday for 7 people. Can I have the reference number? Sentence18: Yes, I'll also need a taxi to commute between the two places. I'll need to arrive at the restaurant by the booked time. Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System