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: The area is flexible. I am more concerned with finding something with 2 stars and with free wifi. Sentence2: thats fine, thanks Sentence3: Perfect. Can you book 3 seats for me? Sentence4: I need a train out of cambridge on Monday. Sentence5: Okay. There are 3 hotels matching your description. Two moderately priced hotels in the north, and one expensive hotel in the east. Do you want me to recommend one? Sentence6: You're welcome! What part of town would you like to stay in? Sentence7: Booking was successful, the total fee is 225.3 GBP payable at the station. Your reference number is VMZ1Y1EA . Can I do anything else for you today? Sentence8: Yes, please. I also need a hotel with free wifi. And, thank you for the train reservation. Sentence9: There are over 200 possibilities. Where will you be traveling to from Cambridge? Sentence10: Let's change the date to leaving on Tuesday after 20:00 and it should be departing Cambridge and to the Birmingham New Street. Sentence11: What's the name of the expensive hotel? Sentence12: I would recommend TR6319 which leaves Cambridge at 20:01 and arrives at Birmingham New Street at 22:44. Sentence13: express by holiday inn cambridge is the expensive hotel. Sentence14: Thanks for letting us assist you today! Enjoy your stay! Sentence15: Would you like me to book that for you? Sentence16: No, I'm just gathering information right now. Thanks for all your help today. That's all I need. Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User