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 was able to book the train, TR3844, for 30.29 total fee, which you may pay at the station. Reference number is 1PISWDKF . May I be of anymore assistance? Sentence2: That is all. Thanks so much! Sentence3: Can we book that place for, say, same number of people at 10:00 on the same day, please. Sentence4: I have 2, Prezzo - moderately priced and La Margerita - cheap, which one do you prefer and when would you like the reservations? Sentence5: Where are you going and on what day would you like to travel? Sentence6: Also looking for an Italian restaurant in the West. Sentence7: Booking was successful. The table will be reserved for 15 minutes. Reference number is : 78MCBK84 . Is there anything else? Sentence8: Hi, I'm looking to book a train to Cambridge. I need it to arrive by 14:15. Sentence9: I am going to bishops stortford and traveling on wednesday. Please reserve 3 seats and provide the reference number, thank you! Sentence10: Where will you be departing from? Sentence11: Yes, let's go with La Margerita. I don't need reservations, thank you. Sentence12: Thank you for contacting us and have a nice day. Sentence13: I will be departing from Cambridge. Sentence14: Is there anything else I can do for you today? Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System