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: The price is 9.80 pounds and will leave at 8:11 and arrive at 8:58, which is 47 minutes travel time. Would you like to book a seat? Sentence2: Yes, that sounds good. Sentence3: You are welcome. Is there anything else I can do for you? Sentence4: Actually hold off on booking for now. Thank you for your help. Sentence5: No, that will be all. Thank you for all your assistance. Sentence6: I have 4 trains that arrive before 9:45. Would you like me to book TR8705 which leaves at 8:11 and arrives at 8:58 Sentence7: I am looking for a restaurant called Charlie Chan Sentence8: I am looking to leave Kings Lynn station and arrive by 9:45 Sentence9: yes please, for 1 person at 12:45 on Thursday, thank you Sentence10: Thanks! I also need a train to Cambridge on Thursday. Can you help me with that? Sentence11: Can you tell me your departure station and a time you'd like to either leave or arrive? Sentence12: You're all set! The reference number is NL81FN41 Sentence13: You're welcome! Let me know if I can help with anything else. Sentence14: What's the price and travel time for that train? Sentence15: I found Charlie Chan on Regent Street City Center. Can I book that for you? Sentence16: Is this also just for one person? Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User