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 booking was unsuccessful, I'm sorry. Is there another day or time that would work? Sentence2: Alright, that sounds good to me. Could you give me their address and phone number please? Sentence3: Have a wonderful time! Sentence4: How about the Hotel Du Vin and Bistro? Would you like to book a table for this restaurant? Sentence5: I'm looking for a place near the center of town that serves european food. Sentence6: Yes, that would work. Could you make it for Sunday at 16:30 for 1. Sentence7: Certainly. We have 31 moderately priced restaurants. Is there any particular cuisine you would prefer? Sentence8: They do indeed have a table at that time. Your reference number is 0WBNIZLJ . Sentence9: Can you assist me with finding a moderately priced restaurant? Sentence10: There are 11, I would recommend broughton house gallery because it has free admission. Sentence11: Sure, their address is 98 King Street, and the phone number is 01223314960. Sentence12: Thank you. that is all the information I'l be needing today! Sentence13: Thank you. Is there a museum in the same area as the restaurant that I could go to? Sentence14: How about 15:30? Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User