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: Do you see any museum instead? Can I have the address? Sentence2: That sounds great. Can I also have a taxi leaving at 11:45 from the museum to the hotel? Sentence3: I'd like to suggest alpha-milton guest house. Is there anything else I could help you with? Sentence4: No that's all i need. Thank you very much! Sentence5: Yep there are plenty of it. I would recommend the cambridge and county folk museum, which is located at 2-3 castle street. Sentence6: You're welcome. Have a nice trip. Sentence7: Cool. Can you help me to book a room there for 4 people and 3 nights starting from saturday? Sentence8: I'm also looking for a cinema in the west. Sentence9: Please look for the white tesla. Its contact number is 07418410137. Is there anything else I can do for you? Sentence10: You're all set. The book was successful and the reference number is 20MS14XW . Sentence11: I have eighteen entries that match that. Please specify whether or not parking and free WiFi are of importance to you Sentence12: Sorry, I cannot find any cinema in the west. Sentence13: It doesn't need to include internet. Does that narrow down the options? Sentence14: I'm looking for a moderately priced hotel. Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System