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: Thank you, please do remember you can contact us again at any time you need more help! Have a great day! Sentence2: I'm looking for a hotel to stay in the north, specifically, a guesthouse. Sentence3: Your room at Worth House is booked, ref# 6HUOIUXC . They do offer free parking. Is there anything else I can help you with? Sentence4: I'm sorry. Yes. Please book the train on Friday arriving by 14:30 for one person. Sentence5: Sure! Does it include free parking? If so I am looking for a reservation for 1 starting friday for 3 nights. Sentence6: That is all I need, thank you. Bye. Sentence7: Super! I have a range of guesthouses in the north. May I recommend Worth House, rated 4 stars but cheaply priced? The guesthouse offers internet and parking. Sentence8: The booking was successful, the total fee is 75.09 GBP payable at the station. Your reference number is : QQFBZTYO . Is there anything else I can help you with? Sentence9: TR7040 arrives at 14:23. Would you like me book for you? Sentence10: Hello! I'm just planning my trip to Cambridge and need train schedules. Sentence11: depart from birmingham new street ,I want to leave on Friday and arrive by 14:30 Sentence12: I'd love to assist you with that. Where are you departing from, and when do you want to leave? Sentence13: Book it for myself. Sentence14: I'm sorry if I misread, but did you want me to book that TR7040 train ticket for you? If so, how many tickets would you like? Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System