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: Have a wonderful day. Goodbye. Sentence2: If you go there, you are in for a treat. They have excellent food! They are moderately priced and located in the north. They are at 191 Histon Road Chesterton. Sentence3: Can you assist me in making a reservation for Friday? Sentence4: A hotel, please. I'm not worried about the price. Sentence5: I also need a taxi from the hotel to the restaurant. Sentence6: Would you like a guesthouse or hotel? Would you like it in the cheap, moderate, or expensive range? That will help narrow it down. Sentence7: Thank you, that is everything I need Sentence8: Booking was successful. Your reference number is : BNFZMVOX . Is there anything else you need assistance with today? Sentence9: Thank you, I will definitely try to do that. Bye. Sentence10: Sure. How many people will be in your party and what time would you like to dine? Sentence11: just that would be nice Sentence12: enjoy your stay Sentence13: Great can I book that for 3 nights for 7 people on friday? Sentence14: There are no hotels that match what you need. Would you be ok with booking a four star? Sentence15: I need a 5 star hotel too with free wifi. Sentence16: There will be 7 people at 11:15 on Friday please. Sentence17: I've booked a you a taxi, a blue volvo will come to pick you up. Their contact number is 07808756171 Sentence18: How about the allenbell it is a guesthouse located in the east it is also cheaply priced with 4 stars. Sentence19: Okay, what time are you leaving? Sentence20: I just need to arrive in time for my reservation at 11:15. Sentence21: I have successfully made a reservation for your party at the Golden Wok for Friday. Your reference is YCGV7GX9 . Is there anything else I can help you with? Sentence22: i am looking for a particular restaurant. Its name is called golden wok. Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User