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: Booking was successful. The table will be reserved for 15 minutes. Reference number is : V6LXVBDJ . Sentence2: I am also looking for a place to stay that has free wifi. Sentence3: Do you want to stay in a particular area of town? Sentence4: rad, thanks for your help. Sentence5: Not at this time thank you. Sentence6: Can I help with anything else today? Sentence7: I will take the University Arms Hotel, please. I would like it booked for 4 nights on Friday. There are 5 people in my group. Sentence8: They do have free internet and parking but the price is in the moderate range. Sentence9: Hi, I'm trying to find a restaurant called sala thong. Sentence10: I definitely want to stay in the expensive range, so how about we change the area to the centre of town. What do you have there with wifi and parking? Sentence11: We have Gonville Hotel with 3 stars and University Arms Hotel with 4 stars. Which would you like more information on? Sentence12: Sure. I need a table for Friday at 14:15 for 5 people. Sentence13: Thank you for calling and have a great day. Goodbye. Sentence14: How about kirkwood house?? Sentence15: Is that in the expensive price range and do they have free internet and parking? Sentence16: You are all set the reference number is CZ52QG8N, anything else today? Sentence17: Yes, I want to stay on the north side of town. Sentence18: Sala Thong is a great Thai restaurant in the West. Would you like me to book a table for you? Question: Who has spoken the sentence 17? (A) User (B) System
Output: 


Answer: (B) System