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 going to cambridge on friday, leaving from norwich and I need to book 5 tickets. And can you please give me the reference number? Sentence2: I just need to arrive by 16:30 find a time close to that and help me get 5 tickets please. Sentence3: You are welcome, enjoy your stay in Cambridge. Sentence4: I have booked you on the TR4828 departing Norwich from Cambridge at 14:16 and arriving by 15:35, the total is 88GBP and your reference number is HXYMACBP . Sentence5: Could you book a table for me there please? 5 people on Friday at 20:00. Sentence6: It is a chinese food in the centre. It is expensive and located at 21 Burleigh Street City Centre. Sentence7: Is there a arrive or leave by time you prefer? Sentence8: Thank you! I think that's all I need for now. Sentence9: Yes, I need to leave Norwich on Friday. Sentence10: I have 10 trains that will have you arriving by 16:30. Do you have a specific departure time? Sentence11: I am showing 791 entries that will fit your criteria . Is their a specific day or departure location you would like ? Sentence12: I am looking for a train that goes to Cambridge and arrives by 16:30. Sentence13: I also need help looking up a restaurant called hk fusion. Sentence14: The booking was successful. The table will be reserved for 15 minutes. Reference number is YB8DRR8X . What else may assist you with? Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System