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: Yes, I am looking for places to go in the centre area. Sentence2: Yes, please. I need a booking for 4 people and will need the reference number. Sentence3: Yes, please get me their entrance fee and postcode. Sentence4: Yes our family likes to swim! Sentence5: Great! I have those trains up. May I now get where you are traveling to? Sentence6: We have many fine attractions in the center of town. Is there a particular type you're looking for? Sentence7: Their entrance fee is not in our system and they are in cb11ly Sentence8: I am goint to London Kings Cross and should arrive by 21:45. Sentence9: Great! There is just one swimming facility in the central zone: Parkside Pools. Would you like their contact information? Sentence10: I am looking to book a train that departs from cambridge on saturday Sentence11: Thanks, you, too. Sentence12: Have a great day. Sentence13: Would a swimming pool work in its place? Sentence14: I have booked your tickets. Your reference number is GW9K5282 . Can I help with anything else today? Sentence15: Sure, I have a train arriving at 19:51 TR0427. Would you like to book it? Sentence16: Thank you. That's all I need for today. Sentence17: You're welcome! Bye! Sentence18: I would like a mutilple sports attraction please. Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User