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: Do they have any available tables for 3 at 20:15 that day? Sentence2: You're welcome! Have a great day! Sentence3: The latest train from Stevenage to Cambridge on Friday that will arrive by 16:30 leaves at 13:54 and arrives at 14:43. Would you like me to book it? Sentence4: I need a train that arrives in Cambridge by 16:30. Sentence5: On what day are you traveling? Sentence6: 12.80 pounds per person, do you still want me to book you? Sentence7: No but I need information on a restaurant called loch fyne. Sentence8: We can certainly book that for you. Would you like a reservation and a booking for the train? Sentence9: What would you like to know? Sentence10: Please book me a table for the restaurant and provide the reference number. Sentence11: that is fine. how much is the ticket? Sentence12: No, that's all I needed today. Thanks for your help! Sentence13: Booking was successful. The table will be reserved for 15 minutes. Reference number is : ENJNFM36 . Can I be of any further help to you today? Sentence14: Friday, departing from Stevenage. Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System