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: No, as long as it has free wifi and parking. Sentence2: Is there a price range or area you prefer? Sentence3: I'm happy to be of service, and I hope you enjoy your stay in Cambridge! Sentence4: There are 9 cheaply priced guesthouses with free parking and Wifi. Is there are certain area of the city you'd like to stay in? Sentence5: I am really looking for italian food. Sentence6: I'm looking for a restaurant in the cheap price range and in the north side of town. Sentence7: It is located in the city centre, anything else? Sentence8: No, just the address, area please. Sentence9: Actually, I apologize for not being more specific, I want to stay in a guesthouse Sentence10: What area is that in Sentence11: We have an Italian and an Indian restaurant that are both inexpensive in the north part of town. Would you like the addresses of those? Sentence12: Yes I am looking for hotel that is cheap have free wifi and free parking. Sentence13: I would recommend the ashley hotel. Sentence14: alexander bed and breakfast address is 56 saint barnabas road in centre. Sentence15: Great! Yes, I'll also need to find a hotel with free parking and free wifi. Sentence16: That is all. Thanks for the help! Bye! Sentence17: Great, thanks for the help! Sentence18: Glad I could help. Do you need assistance with anything else today? Sentence19: Well here is Da Vinci Pizzeria in the north. It's cheap. 20 Milton Road Chesterton. Sentence20: Yes, that would be fine. Can you book a table for 4 at 16:00 on Wednesday? Sentence21: Absolutely. You're booked for 16:00 and the reference number is I3WAD456 . Can I help you with anything else today? Sentence22: Alexander bed and breakfast is in the cheap price range and has both free parking and wifi, would you like a reservation? Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User