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'm departing Cambridge Thursday and want to arrive in Stevenage by 8:00. Sentence2: You're welcome. Hope you enjoy your day. Sentence3: Hi! Can you help me find a train? I need to travel on Thursday. Sentence4: Yes please, I'd like the number. Sentence5: There are several fine museums to visit, what area of town would you like? Sentence6: I would like something in the center of town, please. Sentence7: Broughton House Gallery is a free nice museum. The address is 98 King Street. Would you like the phone number? Sentence8: Their number is 01223314960. Sentence9: I can absolutely help you with that! Can you please tell me where you will be departing from and the destination? Sentence10: What is the price and travel time for this particular train? Sentence11: Great. Thank you very much for all of your help. Sentence12: Thank you. Can you also find me a museum to go to? Sentence13: The price is 12.80 pounds and the duration of the train ride is 49 minutes. Sentence14: I have one train leaving at 05:21 and arriving at 06:10. Would you like me to book a ticket for you? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System