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: i want to confirm this, do i book for 1 person? Sentence2: The south part of town,please Sentence3: I have your booking completed and your reference number is: Z38G5W6W . Is there anything else I can help you with? Sentence4: I actually needed a room for 8 and 4 nights starting from Friday. Sentence5: You are welcome, have a great day. Sentence6: Nope, that's it! Thank you so much. Sentence7: book for two Sentence8: Yes what area are you looking to stay in? Sentence9: The museum is located on Sidgwick Avenue in the west and it is free to get in. Do you need any other information? Sentence10: Can you give me information about the museum of classical archaeology? Sentence11: Thank you! Can you help me find a place to stay while I am there? Sentence12: the aylesbray lodge guest house is moderately priced and is located at 5 mowbray road. would you like me to make a reserevation? Sentence13: Yes I need the phone number. Sentence14: Yes. I would like to make a reservation for 8 for Friday. Sentence15: We are showing to guest houses in the south area. Do you have a price preference? Sentence16: Okay I've fixed your reservation and the reference number is XTX3KFP2 . Is there anything else you need? Sentence17: The phone number is 01223335153. Sentence18: No, I don't care about the price of the place. Sentence19: I would like a star of 4, free parking and free wifi. Sentence20: We have 4 options, any other preferences to help narrow things down? Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System