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: 3 people at 12:15 on thursday Sentence2: You're all set. Your reference number is TZPHV671 . Sentence3: The Curry Prince isn't in the west part of town, but there's a moderately priced Indian restaurant called Meghna, would you like to make reservations there? Sentence4: I am departing from The Ashley. Sentence5: I am also going to need a place to stay - somewhere in the north, I think. Sentence6: where is your departure site? Sentence7: Okay I booked a taxi for you. The car type is going to be a blue honda, and the contact number is 07061162285. Sentence8: It doesn't matter. Sentence9: If it is in the west part of town, yes. If not can you suggest something else? Sentence10: You're welcome, have a great day. Sentence11: I also need a taxi that will arrive at the restaurant by the booked time. Sentence12: Can you help me find a moderately priced Indian food restaurant? Sentence13: There are 2 hotels in the north, Ashley hotel and lovell lodge. Both are moderately priced, do you have a preference between them? Sentence14: Okay if you would like me to book the Ashley I would be happy to do so. Sentence15: that will be it for today. thanks Sentence16: I don't need parking, but I would like to make sure it is a hotel, not a guesthouse. Sentence17: I can definitely do that, how many people will be dining and at what time would you like? Sentence18: Yes 3 people, two nights on thursday. Sentence19: there are 5 guesthouses in the north ranging from 3 to 4 stars. do you need internet or parking? Sentence20: Booking was successful. Reference number is : VDE49MAL . Sentence21: Yes, I need a reservation on Thursday. Sentence22: the curry prince is nice. Do you want reservations ? Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User