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 same day that the train is. Sentence2: Thank you. I am also looking for a 4 star hotel located on the west side of town. Sentence3: The TR1499 leaves at 17:11. Sentence4: I am looking for information in Cambridge Sentence5: Huntingdon marriott hotel would be great for you. Would you like reservations? Sentence6: There are three 4 star choices in the west part of town. Two cheap and one expensive choice. Do you have a preference? Sentence7: can you book it for 3 and give me the reference number please ? Sentence8: Price doesn't matter but I need it to be a hotel. Sentence9: Booking was successful, the total fee is 23.52 GBP payable at the station. Reference number is : 7FJ6TZUM . Sentence10: Your booking was successful. Your reference number is NK5JAGZB, is there anything else I can help you with today? Sentence11: Actually I need a train to Cambridge from Kings lynn on Saturday after 17:00. Sentence12: That is all I need today. Thank you for all your help! Sentence13: What day would you like your reservations to begin? Sentence14: Great. You are welcome to use this service again should you need it. Sentence15: Yes, please. I will also need the reference number. Sentence16: It will be 3 people and 3 nights Sentence17: I'd love to help. In the future, these hits require more effort. Want something in the north? Sentence18: I'd be happy to help you book that, I will need the day you're arriving, how many people and how many nights? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System