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: There are four expensive Italian restaurants in the centre region: Stazione Restaurant and Coffee Bar, Clowns Cafedon Pasquale Pizzeria, and Caffe Uno. Would you like to try getting a reservation? Sentence2: There are no restaurants matching your requirements in that area. Sentence3: I'm leaving Cambridge and am looking for a train that should leave on Monday. Sentence4: I need to depart for Birmingham New Street after 20:15. Thank you so much for your help, you're doing a wonderful job! Sentence5: Where would you like to arrive? I have some arriving at london kings cross on monday. There are other arrival places also available. Sentence6: There are several. Do you have any food preferences? Sentence7: Can you give me alternate expensive restaurants in the Centre? Sentence8: Yes I would like to book for 4 people and I need the reference number. Sentence9: I would like the reservation for 14:45 for 4 people on Monday, please. Sentence10: You are now booked for Cafe Uno. Your reference number is 0CTGEFMD . Your table will be reserved for 15 minutes. Sentence11: I would like to try Caffe Uno. Sentence12: That's all I needed, thank you. Sentence13: That would be great thank you. I am also looking for halal food located in the Centre. Can you help me find one? Sentence14: You're welcome. Have a great day! Sentence15: What time would you like your reservation for? Sentence16: Would the TR2392 that arrives in birmingham new street by 23:44 be okay for booking? Sentence17: Yes, please tell me about Italian food. Sentence18: Okay there are several trains that leave after that time to the destination you listed. Would you like a reference number to one of them? Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System