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: Train TR4553 departs at 11:40 and arrives at 14:23. Would you like assistance booking a ticket? Sentence2: I would like a train, arriving by 1500 and departing from birmingham new street. Sentence3: Okay! Glad I could be of help. Sentence4: Certainly, leaving birmingham new street on saturday would you rather leave at 10:40 to arrive by 13:23, or leave at 11:40 to arrive by 14:23? Sentence5: Bloomsbury restaurant serves international cuisine, is located in the centre part of town, and is in the moderate price range. Would you like the address and/or phone number? Sentence6: Can you confirm that the train booing is for 8 people, please? Sentence7: Booking was successful. The table will be reserved for 15 minutes. Reference number is : HSIINNN4 . Did you need anything else today? Sentence8: Wonderful! You have been incredibly helpful. That will be all I need today. Sentence9: Cambridge, of course! I need the make it to the restaurant booking! Sentence10: I would like to leave at 11:40 please Sentence11: Actually, are you able to book me a table? I'd like it to be for Saturday. The table should be for 8 people, at 19:15, and please provide a reference number. Sentence12: There are 63 different trains that leave Birmingham New Street and arrive by 15:00, where did you want to go? Sentence13: Hello, I am planning a visit to Cambridge and would like to find out about Bloomsbury Restaurant. Sentence14: Yes, I was able to book 8 tickets on that train for you. The total fee due, payable at the station, is 480.64 GBP. Your reference number is G99GK4JT . Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User