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: The address for Castle galleries is Unit SU43, Grande Arcade, Saint Andrews Street. Sentence2: Yes, I would like to head to and from the attraction. Sentence3: Let us know if you need further help. Good bye. Sentence4: Alright, I have a red skoda scheduled to pick you up. The contact number is 07634294072. Can I help you with anything else? Sentence5: Hi, I am looking for a hotel called the Acorn Guest House. Could I get the address? Sentence6: And how many nights would you like to stay? Sentence7: Nope that should do it. Thanks much, goodbye! Sentence8: Will you be heading to the hotel? Sentence9: Acorn Guest House is located at 154 Chesterton Road, cb41da. It's a 4-star guesthouse in the north. Sentence10: Great. I need to make a reservation starting on Saturday. Sentence11: Great. I would like a taxi to pick me up there at 21:00. Sentence12: 6 people and 5 nights starting from saturday. Sentence13: 5 nights starting from saturday. Sentence14: And how many people will be staying? Sentence15: Your reservation for 5 people at the acorn guest house this saturday for 6 days 5 nights was successful. Your Reference number is : ME1D0S58 . Sentence16: Thanks so much. Can you tell me the address for a place called Castle Galleries? Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User