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, it is 38 minutes of travel and costs 8.08 pounds; would you like to book a ticket? Sentence2: It was all booked, reference number is 44HT5TVB . Sentence3: Yes please. Book it for Saturday for 5 people as well. Sentence4: Price doesn't matter. What is your favorite? Sentence5: Thank you for contacting us and you have a great day. Sentence6: There are a few trains that day depending on when you'd like to depart. How's 9:29 and arriving at 10:07? Sentence7: Thanks! please make a reservation for 5 at 12:45 on saturday. Sentence8: Does that train head to cambridge? Sentence9: I like Curry Prince, its on 451 Newmarket Road Fen Ditton. Sentence10: I have several. I have two options that are moderately priced and two that are expensive. Did you have a preference on price range? Sentence11: Great, thanks! Can you help me with train schedules too? I need to travel on the same day from Bishops Stortford. Sentence12: I'm looking to go to Cambridge and need an indian restaurant in the east. Sentence13: No that is all you done a great job thank you. Sentence14: Booking was successful, the total fee is 40.4 GBP payable at the station. Reference number is : JFGE7RPD . Is there anything else I can help with? Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User