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 can I find the galleria restaurant? Sentence2: That reservation has been made. The reference number is E2JBIHKC . Sentence3: Actually I need to arrive by 11:45, sorry. What's the closest arriving to that time? Sentence4: Yes, please book 2 tickets and then give me the reference number Sentence5: Sure. The Galleria Restaurant is located at 33 Bridge Street. Is there anything else I can assist you with? Sentence6: Could you set up a reservation for 2, at 14:00 on Tuesday? Sentence7: The reference number for your train booking is HWIMEWD3 . Anything else? Sentence8: What day will you travel? Sentence9: That is all for now. Thank you very much. Sentence10: I need it for Tuesday I want to arrive by 14:45. Sentence11: Train TR9102 leaves at 5:11,would you like me to book it for you ? Sentence12: Great, it was my pleasure! Goodbye, until next time! Sentence13: TR1704 arrives in Cambridge on Tuesday by 10:58, would you like to reserve a seat? Sentence14: Awesome. Now please find me a train from Kings Lynn to cambridge Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User