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: Is there anything else I can assist with regarding your travels? Perhaps a hotel stay? Sentence2: Okay what day and time would you like to travel? Sentence3: The address is 529 Newmarket Road Fen Ditton. The phone number is 0122324882. Sentence4: I have train TR6386 that will leave at 12:24 and arrive in Cambridge at 12:52. Would that work for you? Sentence5: It is 10.10 pounds Sentence6: adress and phone number please and thank you Sentence7: Sure, it is an expensive Chinese restaurant. What would you like to know? Sentence8: Your welcome. Hope your have a great trip. Sentence9: Yes, thanks for all your help today. Sentence10: Thanks. I appreciate your help. Goodbye. Sentence11: Great that is all I need for now thank you. Sentence12: welcome. have we done all you wanted us to? Sentence13: on wednesday leaving after 11:30 Sentence14: I am looking for details on the yu garden restaurant. Sentence15: Yes it will what is the price? Sentence16: Thank you. I am also looking for a train to Cambridge form Stansted Airport. Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System