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: The train would arrive at 14:35. The train ID is TR8724. Is there anything else I can do for you? Sentence2: Sure, what time will you need to arrive in Cambridge? Sentence3: Yes, that was what I went ahead and booked for you already. Your reservation is set for Saturday at 19:00 for 2 people. Is there something else I can help with? Sentence4: I'm sorry, but there are no polish restaurants in the centre. Would you like to change your search? Sentence5: Yeah, I'd like a place to eat, Mediterranean cuisine please. Sentence6: The earliest train leaves Norwich for Cambridge at 13:16. The price is 14.08 pounds and the duration will be 79 minutes. Would you like me to book? Sentence7: I need to find a train from Norwich on Saturday. Sentence8: Do you have a reference number for that? Sentence9: When does it arrive and what is the train ID? Sentence10: My apologies for not providing it. Your reference number for the restaurant booking is Y5GU93IK . Sentence11: The gardenia located at 2 rose crescent city centre. Would you like to make reservations? Sentence12: How about a restaurant that serves mediterranean food? Sentence13: It doesn't matter what time I arrive, but I would like to make sure I leave Norwich at or after 13:00. Sentence14: Thank you for using our system! Sentence15: I am also looking for Polish food, in the Centre of town. Sentence16: i would like to book a saturday reservation for 2 people at 19:00 please. Sentence17: Okay fantastic, that's all I need today. Sentence18: I have booked it for you at 19:00 and the reference number is Y5GU93IK . Is there anything else I can help with? Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User