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 very ok Sentence2: No. I think you've met all of my needs today. Thank you. Sentence3: We have two moderately priced options, the varsity restaurant and bloomsbury restaurant, any preferences? Sentence4: There are many trains available on Sunday. Any particular time? Sentence5: How many tickets would you like? Sentence6: Thanks! I also need a train from Cambridge to London Liverpool Street. Sentence7: I have you booked, the reference number is 206RQ761, can I help with anything else? Sentence8: the varsity restaurant sounds good. Could you book a table for 7 people at 14:45 on saturday? Sentence9: 7 tickets please and I'll also need to get a reference number from you, just in case Sentence10: Hi I'm excited to try an international restaurant in the centre, are they are I can go to? Sentence11: What day would you like to travel? Is there a time you would like to leave or arrive by? Sentence12: TR0189 leaves at 15:59. Is that alright for you? Sentence13: I am glad to help. Enjoy ! Sentence14: 7 tickets on TR0189 is 92.96 GBP. You can pay that at the station. Your Reference number is : GAH6RYK1 . Can I assist you with anything else? Sentence15: I need that leaves after 15:15. Sentence16: I will be traveling on Sunday. Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System