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 TR9714 leaves at 09:40. Sentence2: Can you please provide me with the arrival and travel time? Thank you Sentence3: Their address is saint andrew's street, and their phone number 01223334900. Sentence4: Great, thanks so much, that's all that I need! Sentence5: Okay, there are 18 in town! What part of town would you like to go to? Sentence6: The arrival time is 12:23, and it's a long trip - 163 minutes. Can I help you with anything else today? Sentence7: I'll be traveling to Cambridge and want to depart from Birmingham New Street. What are my options? Sentence8: I personally like to visit Christ's College myself. And, it's free to enter. Would that work for you? Sentence9: That sounds great. Can you give me the address and phone number? Sentence10: Thank you so much for calling Cambridge TownInfo centre! It was a pleasure to serve you, we hope you enjoy your trip! Sentence11: I need to book a train that leaves after 08:45 on Sunday Sentence12: Yes I am looking for colleges to visit in town. Sentence13: Whichever one wherever you like best please. Sentence14: I can help! Where are you traveling to? Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User