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: No, I'm all set. Thanks! Sentence2: We have several attractions in the South. Which would you be most interested in; cinema, entertainment, museum, night club, park or theatre? Sentence3: Was that train on Saturday? I don't remember telling you the day. Sentence4: I booked you with TR7015 your reference number is K1AY8EKU . Sentence5: Just pick one for me and send me their poscode, phone number and address. Sentence6: I'm going to Cambridge, leaving after 13:00. I'll need to book for 7 people. Can I get a reference number too please? Sentence7: Yes please can you help? Sentence8: i am glad i can help enjoy your stay ! Sentence9: Nusha is located at Unit G6, Cambridge Leisure Park, Clifton Road. Their post code is cb17dy, and their phone number is 01223902158. Sentence10: I'd love to help! Where is the destination? Sentence11: Sorry, I can fix that. Did you need it for Saturday? Sentence12: Yes, I was able to fix that. I have a booking for seven people to leave Broxbourne on Saturday at 13:32. Total fee is 100.24 GBP, payable at the station. Reference number is WZZMBZQ4 . Is there anything else? Sentence13: I also need a train from broxbourne. Sentence14: great! i have two options for you to choose from! Sentence15: I am looking for an entertainment type attraction. Sentence16: I am looking for something entertaining in the south. Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System