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: Thanks! I'd like to book at the worth house for 7 people and 3 nights starting thursday. Sentence2: The Worth house is a cheap hotel in the north. Its on 152 Chesterton Road. Would you like to book? Also would you like me to book train? Sentence3: No, can you give me the travel time, departure time, and train ID for the train you mentioned? Sentence4: I have train TR1590 that will leave at 11:32 and put you in Cambridge at 12:32. Would that be okay? Sentence5: I just need to arrive at or a little before 13:00, please. Sentence6: No thank you that will be all Sentence7: I will be departing from broxbourne on thursday. Sentence8: TR1590 leaves at 11:32 and the duration is 60 minutes. Sentence9: What time would you like to leave by? Sentence10: Your reservations at Worth House have been confirmed. Your reference number is FA43DXGE . Did you need assistance reserving train seats? Sentence11: Yes. I also am looking for a hotel called Worth House. Sentence12: From where and at what time would you like to depart? Sentence13: I need a train going to cambridge on thursday . Sentence14: You're very welcome. Enjoy your stay at the Worth House. Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User