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 great. Can you help me make a booking for 6 people please? Sentence2: Yes, with a star of 4 please. Sentence3: You are booked as requested, the reference number is 5ROZN3ZO, any further questions? Sentence4: thank you and enjoy your stay in Cambridge! Sentence5: Oh my. Are there any moderate-price guesthouses in the east with 4 stars? Sentence6: Yes, please book 6 people for 2 nights beginning friday Sentence7: I need a play to stay in the east in the moderate price range Sentence8: I do not have any 4 star hotels in the east. Would you like to try another area or maybe go with a price range in the East? Sentence9: Hi, I'm looking for a train arriving in Cambridge by 21:15. Sentence10: Yes, I found three. I would recommend Carolina Bed and Breakfast it is moderately priced and located in the East. Would you like a reservation? Sentence11: I will look that up for you,do you want a hotel ? Sentence12: Can you tell me where you will be departing from and what day you would like to travel? Sentence13: I would recommend TR9589 which leaves Norwich at 19:16 and arrives in Cambridge at 20:35. Sentence14: Great!! That's all for now. Thank you so much. Sentence15: Sure, I'll be leaving from Norwich. Oh, and I'd like to travel on Friday please. Sentence16: Booking was successful, the total fee is 105.6 GBP payable at the station. Reference number is : 2CUTCPH6 . Is there anything else I can help you with today? Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User