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: Curry Garden, your booking was successful. The table will be reserved for 15 minutes. Reference number is: IKOI9CFQ . Will there be anything else today? Sentence2: That will be all. thank you Sentence3: There are multiple Indian restaurants in the centre. Are you looking for something cheap or something expensive? Sentence4: What is the name of the 3 star one? Sentence5: There are two hotels near the restaurant you booked, they will meet your needs. Would you like the 3 star or 4 star? Sentence6: I'm not concerned about price, but I need a table for 6 at 12:15 on Sunday. Sentence7: Thank you so much. Can you also find me an expensive hotel with free wifi? Sentence8: I'm looking for a place to dine that serves indian food in the centre. Sentence9: it is gonville hotel. Need a reservation? Sentence10: Yes please for 6 people for 2 nights starting sunday Sentence11: Booking was successful.Reference number is : NCHKFTG3 . what else can i do for you? Sentence12: Thank you for calling in today. I hope you have a great stay. Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System