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: Hello, do you have any information regarding interesting theatres to visit in the centre of town? Sentence2: I'm interested in one of the theatres! Can I get the entrance fee information for those? Sentence3: I'm sorry, but none of the theaters list the entrance fee. Would you like the phone number for any of them? Sentence4: Awesome, thank you very much! I'm pretty sure that's all I need right now, but I'll be back if I think of anything else. Later! Sentence5: That's okay, could you provide me with the postcode and address, please? Also, I am looking for a train leaving after 16:00 this Monday. Sentence6: The ADC Theatre is located on Park Street and its postcode is cb23pj. Before I find your train, could you tell me where you would like to go? Sentence7: Of course, silly me :P I am looking for a train from cambridge to stevenage Sentence8: Sure thing, there are four theatres in the centre of town. ADC Theatre, Cambridge Arts Theatre, Mumford Theatre, and The Cambridge Corn Exchange. Sentence9: The TR0254 leaves Cambridge at 17:21. Sentence10: Great thank you for using our system. Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User