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: Can you check to see if that hotel can be booked for 1 night instead? Sentence2: Yes and looking for moderate price range. Sentence3: Could not book. Do you want to try another time slot? Sentence4: You're welcome. Have a great day! Sentence5: You definitely did, thanks so much! Sentence6: I'm looking for a place to dine in the centre that serves international food. Sentence7: Thank you. That's all I need. Sentence8: We have two options available to you, would you like their names and addresses? Sentence9: I need it for Tuesday for 5 nights for 1 person. Sentence10: The one night reservation was successful. Your reference number is AAWVSXC4 Sentence11: Can I book a table for one hour earlier instead? Sentence12: Booking was unsuccessful. Would you like to arrange a stay at a different time? Sentence13: Yes, the hotel should include free wifi. Sentence14: Can you book me a table for 1 person for Tuesday at 17:15 please? Sentence15: The gonville hotel has wifi, it's in the centre. Does that sound good? Sentence16: I got you a table at the varsity at 16:15. Reference number is Z8WGAYFN . Sentence17: I have 4 guest houses and 2 hotels. Do you have any other criteria? Sentence18: As long as it has a 3 star rating, please book the Gonville Hotel for me. Sentence19: The Varsity Restaurant is located at 35 Sain Andrews Street in the centre, and Bloomsbury Restaurant is located at the Crowne Plaza Hotel at 20 Downing Street. Sentence20: What day would you like to start your stay at Gonville? And how many days are you wanting to stay? Sentence21: You're welcome. I am glad I could assist you. Sentence22: I am looking for a 3 star hotel doesn't need to have free parking. Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System