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 is Trinity Lane postcode cb21tt. No entry fee! Anything else I can help you with? Sentence2: Can you book me a table for Wednesday at 17:30 for a party of 5? Sentence3: Could you please check for architecture? Sentence4: I am also wanting to reserve a table at a place called Cote. Can you help me with that? Sentence5: Booking for 16:30 is set, the reference number is NDSJBN3W, may I assist with anything else? Sentence6: I need a place to go in the centre for entertainment. Sentence7: Yes. how about for 16:30? Sentence8: Sure. When would like the reservation for and how many people will be in your party? Sentence9: I would like to visit an old school. What is your recommendation? Sentence10: You're welcome! Have a great day! Sentence11: I recommend a place called "Old Schools" It is known for it's architecture. Located in the Centre on Trinity Lane. Does that work? Sentence12: I will also need a taxi to from Old Schools to Cote. I need to make sure they arrive soon enough for me to make it to dinner on time. Sentence13: Great that's all I needed today, thank you! Sentence14: I was able to book that taxi for you. Be looking for a black Tesla. If you need to contact them, their phone number is 07900626607. Anything more I can do? Sentence15: It looks like they are already booked for that time slot. Do you have another time you could go? Sentence16: Yes, I just need the address and postal code. Also, what is the entrance fee? Sentence17: There are no attractions under the entertainment classification in Centre. Would you like to try another attraction type or area perhaps? Sentence18: I could recommend some church's and old schools to visit, would that be ok? Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User