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 that will be all thank you Sentence2: I also need a train to peterborough on sunday to cambridge that leaves after 11:30. Sentence3: I don't need you to book that for me today. Thanks. Sentence4: If you are bored, you should try going to Whale of a Time. It is an entertainment venue. Sentence5: What is the price? Sentence6: Great! Have a great day! Sentence7: I show 13 possible attractions in the west. Is there a type of attraction you would prefer? Sentence8: Help! I need to find something to do, I'm super bored. I'm on the west side of the city, can you help me find somewhere to go? Sentence9: What would you recommend? Sentence10: That sounds good. What's the address? Sentence11: Each ticket is 13.20 pounds. Sentence12: There is a train leaving at 11:48. Would you like me to book that? Sentence13: Sure the address is unit 8, viking way, bar hill and the postcode is cb238el . Sentence14: You're quite welcome. Is there anything else I can find for you today? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User