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, aylesbray lodge guest house is in the moderate price range. Can I book you a room? Sentence2: Please book it for 3 people for 2 nights starting Sunday. Sentence3: Booking was successful, the total fee is 42.96 GBP payable at the station. Reference number is : JY9BZKAV . Sentence4: I need to get to Cambridge on Sunday, and I need to get there around 10:00. Sentence5: Yes, I need a booking 3 people and the reference number. Sentence6: I have two options for you. Both offer free parking and wifi and are 4 star rated. There is Aylesbray Lodge and Rosa's Bed and Breakfast. Which would you prefer? Sentence7: There are trains that run out of Broxbourne, right? Sentence8: Booking was successful. Reference number is : L4WMNV6Q . Sentence9: indeed, do you know what day you're traveling? Sentence10: Are either of those in the moderate price range? Sentence11: Thanks for using the Cambridge TownInfo centre. Goodbye! Sentence12: Great, thank you so much for your help! That should be all for now! Sentence13: TR3111 will arrive at 09:32. Want to book? Sentence14: I also need a place to stay in the south with a 4 star rating. Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System