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: Your table is booked. They will hold the table for 15 minutes. Your reference number is 9ZWHYZKH . Is there anything else I can help with today? Sentence2: I need a place to go, something interesting to see. I was thinking maybe a college. Sentence3: Thanks. I am all done here. Sentence4: Thank you. Can you also help me find a restaurant? I think the name is Zizzi Cambridge. Sentence5: Yes please. I would like the reservation to be at 17:00 for one person on Sunday. Sentence6: recommend one and give me its address Sentence7: I'd suggest corpus christi college on king's parade, cb21rh. The entrance fee is 2 pounds. Can I help you with anything else? Sentence8: There are 18 colleges in the area. What parts of town are you willing to travel to? Sentence9: Certainly. Zizzi Cambridge is an Italian restaurant located in the Centre at 47-53 Regent Street, post code cb21ab. Their phone number is 01223365599. Would you like to book a reservation? Sentence10: You're very welcome. Have a wonderful day! Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System