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: book a table for the same group of people at 13:45 on the same day. Sentence2: I'm looking for a train to arrive by 21:45 on wednesday. Sentence3: I am planning a trip in Cambridge Sentence4: okay can you be a little more specific? Sentence5: That will be all. Thank you. Sentence6: Thanks. Goodbye now! Sentence7: Do you need anymore help? Sentence8: Can you book a table for us at Curry Garden at 13:45? Sentence9: Sure thing! How many people, what time, and what day? Sentence10: TR6477 will arrive in cambridge on wednesday by 21:32. I booked 2 tickets. The fee is 25.79 GBP payable at the station. Reference number is 3800N2KU . Wiil that be all? Sentence11: It would be from broxbourne to cambridge, I will need to book that for two people. Sentence12: You're welcome! Have a great day! Sentence13: OK, what station would you like to depart from and which station would you like to arrive at? Sentence14: curry garden is expensive, kohinoor is cheap. Do these interest you? Sentence15: Reference number is : 6JOS1HJY . Is there anything else? Sentence16: I also need a place in the centre that serves indian food. Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User