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: Thank you for using the Cambridge TownInfo centre. Goodbye Sentence2: Great! Can you please book a table for 7 people at Curry Garden? Do they have any openings for 19:15 on Monday? Sentence3: I really hope you enjoy it. Can I help you with anything else? Sentence4: There are 22 indian restaurants in cambridge. Do you have an area of town or a pricerange in mind? Sentence5: I think I would like the relaxing option. What kind of place is it and where is it located? Sentence6: It's what I do! Are you hoping for something fun, like Funky Fun House, or more relaxing, like the Abbey Pool and Astroturf Pitch? Sentence7: No that will be it. Thank you so much. Sentence8: I'm also looking for a restaurant Sentence9: The restaurant should serve indian food. Sentence10: I'll be happy to help with that. What kind of food are you looking for? Sentence11: Booking was successful. The table will be reserved for 15 minutes. Reference number is : L9QZ3HMU . Will there be anything else ? Sentence12: I would like one that is in the expensive range. Sentence13: Thank you so much! I'm really looking forward to this dinner! Sentence14: That is a swimmingpool and located at pool way, whitehill road, off newmarket road. Can I help with anything else? Sentence15: Can you find a place to go in the east? Sentence16: curry garden is a nice place in the centre. Question: Who has spoken the sentence 15? (A) User (B) System
Output: 


Answer: (B) System