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: Where will you be departing from? Sentence2: Thank you, that sounds good! Could you let me know how much it costs? Sentence3: I would recommend train ID TR8542 which departs Cambridge at 10:36 and arrives in Norwich at 11:55. There are a few earlier options as well. Sentence4: Where will you be headed on Tuesday? Sentence5: Their address is 98 king street and they have free admission. Can I help you with anything else? Sentence6: Sure! The cost is 17.60 Sentence7: Thanks for using our service have a good day. Bye. Sentence8: I need to head to norwich Sentence9: There are lots of attractions in Cambridge, do you have any specific activities in mind? Sentence10: No, you have been extremely helpful already. I am all set. Thanks. Bye. Sentence11: Hi, yes, I am looking for a train leaving on Tuesday that will arrive by 12:30. Sentence12: I will be departing from Cambridge. Sentence13: I would like something in the Centre if possible. Perhaps a gallery? Sentence14: Could you let me know the address and how much it costs? Sentence15: Excellent. I also need a place to go in town. Sentence16: How about broughton house gallery? Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User