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, nothing specific. Sentence2: I'd like to book a table for 5 on Monday at 15:45, so if one of them can fit us in at that time I'd like to book it. Sentence3: What cheap restaurants are there in the west of Cambridge? Sentence4: Your booking was successful. Your reference number is M0DKTWYA . Is there anything else I can help you with? Sentence5: Unfortunately there are no tables available at that time. Would you like to try a different time slot? Sentence6: Thanks so much. I will also need a train leaving Cambridge on Tuesday going to London Liverpool Street no later than 16:30. Sentence7: The closest train to your departure time is the 15:59 out of cambridge, arriving london liverpool at 17:27. Would you like to book tickets on that train? Sentence8: Yes I'd like to book 5 tickets. And can I get the reference number? Sentence9: We are glad to be of help. Enjoy your trip and have a wonderful day. Sentence10: How about 14:45? Sentence11: Ok, there is an Italian restaurant and a Vietnamese restaurant, would you like to book a reservation with one of these? Sentence12: That is everything I needed. Thank you! Sentence13: Booking was successful at thanh binh. The table will be reserved for 15 minutes. Reference number is : 3MQZO5NU . Sentence14: There are two selections which fit your specifications. Did you have a specific cuisine type in mind? Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System