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: Please help me find a restaurant that serves Italian food located in the centre. Thanks. Sentence2: This departs at 05:17 and the price of the ticket is 23.60 pounds. Sentence3: please contact us again in the future. goodbye. Sentence4: I will need to have one that is cheap. Sentence5: I want to arrive by 9:15, leaving on Tuesday. Sentence6: That will work. I need the departure time and the price of a ticket. Sentence7: The earliest arrival is 6:08 is that okay? Sentence8: Ok, I was able to book for your party of 6. Your reference number is W0XP7TDX . Is there anything else I can help with? Sentence9: How many people will staying and for how many hni. Sentence10: Yes I need a reservation for tuesday please. Sentence11: There are 9 restaurants to choose from. What is your price range? Sentence12: Sure, I will need a little more information first. What day and time would you like to leave and your arrival time? Sentence13: The one I personally recommend is zizzi Cambridge. It's located at 47-53 Regent Street. Would you like me to make a reservation? Sentence14: thank you. that is all i need. goodbye. Sentence15: I need a reservation for 6 people at 16:00 for this restaurant. Please provide the reference number for the booking as well. Sentence16: Yes, I am also looking for a train from London Kings Cross to Cambridge. Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System