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: Can you help me find a train leaving on tuesday departing from cambridge? Sentence2: Yes, the reservation is complete. You can pay 29.4 GBP at the station. The reference number is: GSD9FUA7 . Can I help you further? Sentence3: and where would you like to go ? Sentence4: Train# TR7548 leaves Cambridge at 10:11, arriving in Kings Lynn at 10:58. Would you like me to book your ticket? Sentence5: Good bye, enjoy your day. Sentence6: I would like one with free admission. Sentence7: thanks you very much Sentence8: I am looking for museum type attractions in the centre of town Sentence9: I would like to arrive by 11:45. Sentence10: you welcome and good bye Sentence11: I have found 11 museum attractions. Do you have a preference or would you like me to suggest one? Sentence12: Yes, please make a booking for 3 people. Sentence13: Thank you very much, that is all I'll need. Sentence14: I would like to go to Kings Lynn, please. Sentence15: At what time will you be traveling? Sentence16: primavera has free admission. Their address is 10 king s parade Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System