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: That sounds fine. What's the price? Sentence2: Sorry, but I don't have anything leaving at 12:00 but I have train TR9781 that leaves at 11:00 and will get you there by 11:51. How does that sound? Sentence3: That's everything. Thanks for the help. Sentence4: I have trains all leaving cambridge going to london kings cross on wednesday. First one leaves at 05:00 last at 13:00 and its a 51 minute ride Sentence5: Looking for a train that leaves on Wednesday. Sentence6: I have the Cafe Jello, which has free admission. Sentence7: The phone number for Cafe Jello Gallery is 01223312112. Can I help you find anything else? Sentence8: Thanks. I'm also looking for a concerthall to visit. Are their any in the west? Sentence9: That's awesome! What's their phone number? Sentence10: One ticket will work. Sentence11: Thanks so much again! Goodbye! Sentence12: We hope you enjoy your trip. Sentence13: You're welcome, goodbye. Sentence14: I would liek to arrive by 13:00, can I book the one that leaves at 12:00 Sentence15: Unfortunately there aren't any. Could you like to try other areas? Sentence16: The ticket price is 23.60 pounds. How many tickets would you like? Sentence17: Booked! You'll pay at the station. Your reference number is: 0140Z2O7 . Sentence18: how about one that is in the type of museum. Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User