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: There are 44 different places in the centre. What kind are you interested in? Architecture, boat, cinema, college, concert hall, museum, night club, park, swimming pool, or theatre? Sentence2: As I mentioned before, can you tell me about a good nightclub? Sentence3: Okay, I have booked the car. The driver will be in a white Honda. Sentence4: I"m looking for a hotel in the east. Sentence5: May I have the contact number for the taxi, please? Sentence6: The day that I arrive is flexible. Sentence7: What night will you be arriving? Sentence8: The price range is expensive, and there is internet. Sentence9: We will be there for 4 nights. Sentence10: There is an Express by Holiday Inn Cambridge, shall I book it for you? Sentence11: I don't have a price preference. Which guesthouse do you recommend? Sentence12: yes book it with reference number Sentence13: I will arrive on Wednesday. Sentence14: I highly recommend warkworth house in the moderate price range. Do you want me to book it for you? Sentence15: I can book the warkworth arriving on Wednesday. How many nights will be be there? Sentence16: Can you tell me about nightclubs in the centre area? Sentence17: Yes, there are a few four star guesthouses in the cheap and moderate price ranges with free parking and internet in the east. Do you have a preference in price range? Sentence18: I can book you in if you have an idea of when your stay will begin. Sentence19: Is there a guesthouse that would be available with that criteria? Sentence20: Booking was successful. Reference number is : IM2BXWKV . Sentence21: That will be all. Thank you for your help. Sentence22: My favorite is Ballare. Their entrance fee is 5 pounds. Sentence23: I need it to have four stars and free parking. Sentence24: Have a wonderful trip. Enjoy the rest of your day, goodbye. Sentence25: The contact number for the taxi is 07885085016. Do you need anything else or is this all for now? Sentence26: 4 of us will be staying. Please give me the reference number for this booking. Sentence27: Now I'll need a taxi to pick me up at 15:00 from Ballare and take me to the hotel Sentence28: How many people will be staying? Sentence29: The phone number is 01223364222. Postcode, cb23na. Address is cb23na heidelberg gardens, lion yard. Sentence30: What is the price range and is there internet? Sentence31: Unfortunately i found no matches. Would like me to look elsewhere with your same request? Sentence32: Can you give me the phone number, postcode and address please Question: Who has spoken the sentence 23? (A) User (B) System
Output: 


Answer: (B) System