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: I am looking for an italian restaurant, cheap preferably. Sentence2: Emmanuel College is located on Saint Andrew's Street in the centre. Sentence3: There are 3 restaurants which match that criteria which are the Pizza Hut City Centre, Ask, and Zizzi Cambridge. Would you like information for one of those restaurants? Sentence4: Can I get the phone number? Sentence5: I would like a taxi. Sentence6: Where would you like to depart from, and at what time? Sentence7: Thank you for the information. I appreciate it. Good bye. Sentence8: 01223334200 is the phone number. Can I help you with anything else? Sentence9: Yes, I'd like to be in the center of town, please. Sentence10: Booking completed! Booked car type : yellow ford Contact number : 07431638056 Sentence11: I need to go from the college to the restaurant by 19:15 on Monday. Sentence12: Please book a table for 4 people at Zizzi Cambridge for 19:15 on Monday and provide me the reference number. Sentence13: I'm glad I could help. Sentence14: Booking was successful. The table will be reserved for 15 minutes. Reference number is : TCYAVOO1 . Can I assist you with anything else today? Sentence15: i'm also looking for emmanuel college Sentence16: There are 5 cheap Italian restaurants is there an area you prefer? Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System