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: Thanks. I am also looking for a hotel in the north. I want something with a 3 star rating. Are there any available? Sentence2: There are four theatres in that area. Cambridge arts theatre is a nice one in that area. Sentence3: It will just be me. I will be arriving Tuesday and staying for 3 nights. Sentence4: Booking completed! Booked car type: grey volvo Contact number : 07836799900 Sentence5: Booking was successful. Reference number is 9MSRK9GO . Do you need help with anything else? Sentence6: Wonderful. Can you get me the address and postcode? Sentence7: I will need a taxi to go from the theatre to the hotel. Can you help me with that? Sentence8: I would like the taxi to be there by 04:30. Also could i have the contact number of the taxi? Sentence9: Great enjoy your visit! Sentence10: Thank you! That is all that I need. Sentence11: That sounds perfect. Yes, I would like to book a room please. Sentence12: Sure, the address is 6 saint edward's passage and the post code is cb23pj. Sentence13: I don't mind something a bit pricey, and I definitely need wifi. Sentence14: Yes I have two both in the moderate price range. Any preference for amenities? Sentence15: When will you be arriving and how many nights will you be staying? How many in your party? Sentence16: I sure can. What time would you like the taxi be there? Sentence17: Hamilton Lodge has free wifi and is in the moderate price range. Would you like to book a room? Sentence18: Are there any theatres in Cambridge, particularly close to the city centre? Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User