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 want to arrive by 10:30 for norwich to cambridge I need the train ID and departure time please Sentence2: How about we try nightclubs? Sentence3: There a 4 trains that would work. They run every hour starting at 05:16. When would you like to depart? Sentence4: Have a wonderful day! Sentence5: The entrance fee is 5 pounds. What else can I help you with? Sentence6: I don't see a match. Do you have any other preferences? Sentence7: Hi I am looking for places to go in the center of town. Sentence8: I also need a train for Thursday running from Norwich to Cambridge, and I'd like to arrive by 10:30. Can you help with that? Sentence9: how about ballare? i've heard great things. Sentence10: the tr9905 will bet you there by 09:35 and it leaves at 08:16, anything else today? Sentence11: Sure, we have a lot of attractions available. What would you like to do? Sentence12: Thanks. You too. Sentence13: An entertainment attraction would be nice. Sentence14: No, that is everything. Thank you so much. Sentence15: You're very welcome! Bye! Sentence16: Ballare sounds great. Is there a entrance fee? Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System