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 many. what is your price range? Sentence2: no, that is all. goodbye. Sentence3: Do any of them offer free parking and wifi? Sentence4: Okay, I went ahead and booked you the warkworth house. Your reference number is 9HN7CVKZ . Can I help you wtih anything else? Sentence5: That sounds perfect, yes please. Sentence6: It is at Finders Corner Newmarket Road. Sentence7: I have 6 four star guesthouses in the east. Would you like to book one today? Sentence8: A table for 6 at 13:15 on Wednesday would work. I'll need a reference number. Sentence9: Thank you for using our services. Goodbye. Sentence10: the missing sock is a cheap restaurant in the east that serves international food. can i give you the address? Sentence11: Booking was successful. The table will be reserved for 15 minutes. Reference number is : VE35KBVE . Anything else I can help with? Sentence12: I would also like a cheap place to eat in the same area. Sentence13: yes 5 of them. what is your price range? Sentence14: I need some help finding a place to stay in the east please. Sentence15: Price isn't really a factor, but I would like 4 star Sentence16: Price doesn't matter. Any of the five will be fine. I'll need it booked for Wednesday. It will be 3 nights and for 6 people. Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System