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 recommend train TR1152 that arrived y 12:58 Sentence2: Great. I have booked 7 tickets for you. The total free is 54.88 GBP and payable at the station. The reference number is 68C4UWDM . Sentence3: I am looking to go to cambrige and arrive by 13:15, and want to go on sunday, it should depart from kings lynn. Sentence4: I have a train that leaves Kings Lynn at 05:11 and arrives in Cambridge at 05:58. Will that do? Sentence5: That's much better, thank you. I'll need tickets for 7. Sentence6: Limehouse is a moderately priced guesthouse with 4 stars located North of cambridge. Their phone number is 01223300552. How else can I assist you today? Sentence7: Glad to have been of help! Enjoy your stay in Cambridge. Sentence8: The Limehouse has been booked for 7 people for 3 days, starting on Sunday. The reference number is QHGUALFE . Sentence9: Unfortunately I can't book that. Would you like to try another day or a shorter stay? Sentence10: Yes, would you try to book it for three nights? Sentence11: Hi I am looking for a hotel called limehouse. Sentence12: That's okay I guess, but is there any later train? We're not early birds. Sentence13: Can I book a room starting sunday for 4 nights and seven people? Sentence14: Yes. I will need to know where you will be departing from and what day you would like to take the train? Sentence15: Thank you so much. I think that did it for today. Have a great one! Sentence16: Thank you. Can you book us a train that gets there by 13:15? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User