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: Absolutely we have 79 locations, do you have a style you'd like to see? Sentence2: Well, could you look for a college? Sentence3: Thank you for calling Cambridge TownInfo centre! It's a been a pleasure to help you, I hope you enjoy your time in Cambridge! Sentence4: Can you also find a nightclub in the west? Sentence5: The phone number is 01223336233. Is there anything else i can help you with ? Sentence6: I was able to book you a room for three days starting on Tuesday. Your reference number is NZ2XYT90 . Is there anything else I can help you with? Sentence7: Thanks! I also need to book a taxi from the hotel to the club, leaving the hotel by 19:45. Can you please help me with that? Sentence8: Sure can I get the phone number to this college? Sentence9: Churchill college has a lot going on at night, that would be a good fit, would you like more information? Sentence10: I'm looking for a hotel called Cityroomz, do you know anything about that? Sentence11: I was able to find a taxi it will be a white ford and the number is 07987674109. Can I assist you with anything else today? Sentence12: Yes, it's located at sleeperz hotel, station road. Sentence13: I'm excited about seeing local tourist attractions!! Can you help me?? Sentence14: Yes I would like to book a room for 1 person for three nights starting on Tuesday. Sentence15: There are no nightclubs in the west. Another type or place perhaps? Sentence16: no that will be all Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User