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: Okay thank you! No that will be everything. Sentence2: The earliest arrival prior to that time is the TR9900 which leaves Norwich at 05:16 and arrives in Cambridge at 06:35. Would you like me to book you a seat? Sentence3: I suggest broughton house gallery located at 98 king street. Sentence4: Booking was successful, the total fee is 52.8 GBP payable at the station . Reference number is : 50KBIWYY . Is there anything else I can help you with? Sentence5: The postcode for the Broughton House Gallery is cb11ln. Is there anything else I can help you with? Sentence6: Certainly. Cambridge has many museum offerings. What area are you thinking of visiting? Sentence7: Yes, 3 seats in fact. Sentence8: Yes I need to find a train on Friday going to Cambridge from Norwich and arriving by 12:45. Sentence9: I'm looking for some museums, could you help me find more information on them? Sentence10: I'm open to visiting any area in Cambridge. Could you suggest a museum please? Sentence11: Thank you for calling today. Sentence12: What's the postcode for that? Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User