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: Yes please. I'll need a table for 4 at 19:15 on Wednesday. Sentence2: Thank you for all of your help. I don't need anything else today. Sentence3: Yes, I also need a taxi to take me to the restaurant, so I will need to be there by 19:15. Sentence4: Yes! I'd like a phone number and address of one of those. Sentence5: Yes I am looking for a restaurant called cafe uno. Sentence6: Booking was successful. The table will be reserved for 15 minutes. Your reference number is BCM0D5Y2 . Is there anything else I can help you with? Sentence7: I found a restaurant named Caffe Uno at 32 Bridge Street City Centre, their number is 01223448620. Would you like me to make you a reservation? Sentence8: Alright I have you booked for a cab from All Saints to Caffe Uno, arriving by 19:15. Sentence9: Yes I have many architectural attractions would you be interested in those? Sentence10: Can I get the contact number and car type for the cab. Sentence11: Hi there! I'm looking for something fun to do in the center of town. What kind of attractions are there? Sentence12: It's going to be a blue toyota and the contact number is 07525945489. Is there anything else I can help with? Sentence13: Sure, all saints church phone is 01223452587. And address is Jesus Lane. Anything else? Sentence14: We are happy to help. Thank you for using our service. Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System