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: that is great! thank you for all your help. Sentence2: I need help finding an expensive restaurant in the centre, can you help me please? Sentence3: Thank you for calling and have a great day. Sentence4: I have found the backstreet bistro and the slug and lettuce, which one would you like more information on? Sentence5: Yes both are in the expensive price range Sentence6: I'd love to help. We have 33 expensive restaurants. Do you have a cuisine you'd prefer? Sentence7: Do anything of them serve gastropub food? Sentence8: I want to book a table for 4 people at 16:15 on a Tuesday please. Sentence9: Can I have the munber in your party and the day and time you would like to book? Sentence10: Great! Here is the address, 34 - 35 Green Street. Sentence11: Okay I was able to book you then at The Slug and Lettuce and your reference number is FSOF58OO . Sentence12: Yes, I'm looking for gastropub food. Sentence13: Thank you so much. That is all I need. Sentence14: Any one will be fine. I need the reference number please after its booked. Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User