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 is all I needed. Thank you so much! Sentence2: How many rooms would you like to book for that group? Sentence3: I'd like a train heading for Cambridge from Peterborough, please. Sentence4: I have your rooms booked. The reference number is 9wy58ojm . Can I help you with anything else? Sentence5: I will be traveling on Saturday. Sentence6: Uh, I thought I told you 8. Sentence7: You are quite welcome. Have a lovely stay! Goodbye! Sentence8: I would like to book it for the same group for 4 nights on Saturday as well. Sentence9: I have 8 seats reserved for you. Your reference number is O2j7w28g . Sentence10: The first train leaves peterborough at 05:19 the last leaves at 07:19 would you like tickets? Sentence11: I can help you with that. What kind of information did you need about the Gonville Hotel? Sentence12: Awesome. I'm also looking for the gonville hotel. Sentence13: Certainly! Did you have a travel day in mind? Sentence14: Yes, for 8 people please. Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User