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: No, I'm good. Thanks for all your help! Sentence2: Here are the numbers for 2 churches, all saints church(01223452587), holy trinity church(01223355397). There are three more if needed. A good restaurant is gourmet burger kitchen. Sentence3: The churches are free. Sentence4: Thank you for using our services! Sentence5: I'm sorry, I'm really distracted on this end. Can you tell me the postcode of the Gourmet Burger Kitchen? And what are their prices like? Sentence6: Oh, wait! If the Gourmet Burger Kitchen is in the same area as the churches, could I get the phone number for that, too? Sentence7: Thank you goodbye Sentence8: It is expensive. The postcode is cb21ab. Sentence9: The address is Regent Street City Centre. What day you would like the reservation to be? Sentence10: Thank you for contacting Cambridge TownInfo centre. Goodbye! Sentence11: I'd like to take a look at some of the older churches, what are some of the entrance fees for those? Sentence12: Please give me their phone number. I also need a restaurant that serves North American food Sentence13: Yes may i please have the address to Gourmet Burger Kitchen and can you book reservations for 2 for 13:00 Sentence14: Will you still need a reservation, or are you all set? Sentence15: I think I can help you with that. There are several historic colleges and churches to see. Many offer free admission. Sentence16: Ok, that's great. Thank you. Sentence17: Certainly! The phone number is: 01223312598 Is there anything else we can assist with today? Sentence18: I'm looking for something to do in Cambridge. I'm interested in architecture, is there any interesting buildings around the city centre? Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User