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: Great, I also need a taxi from the attraction to the restaurant and want to arrive by the reservation time. Sentence2: Thank you. That will be all. Sentence3: yes book for 3 people at 19:30 on friday please Sentence4: I am looking for a place to go in the centre of town. I'm really interested in a theatre. Sentence5: I am also looking for a restaurant in the same area as Mumford Theatre. Sentence6: Yes, their phone number is 08451962320. May I help you find anything else today? Sentence7: There are 4 theatres in the centre I recommend Mumford Theatre. Would you like the address? Sentence8: Ok! Have a great day! Sentence9: The varsity restaurant comes highly recommended and serves international food. Would you like me to book it? Sentence10: do you have any in mind? It really doesn't matter, as long as its moderately priced and in the same general area as the mumford. Sentence11: I have booked your taxi. Be expecting a yellow Volvo. Please contact 07732601077 should you need to reach them. Sentence12: Could I get their phone number? Sentence13: What type of cuisine and price point do you prefer? Sentence14: Your reference number is UZNF1KZ5 and your table will be held for 15 minutes. Is there anything else in which I can help you? Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User