You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Example Input: Sentence1: Yes, I am also looking for places to go in town while we are visiting the area. Do you have anything of concert halls around the area? We love those. Sentence2: Yes, please, what is the phone number? Sentence3: I have that all booked for your stay. Your reference number for the room is ZUG88XKL . Is there anything else I can help you with? Sentence4: I am looking for a place to stay. It should be in a moderate price range and should be a star of 3. Sentence5: The phone number is 01223474144. Sentence6: Yes, I need a booking for 8 people for 5 nights starting Monday. Please include the reference number for the booking. Sentence7: Also the address to the man on the moon is 2 Norfolk Street. You have to call to inquire about the entrance fee. Have a Great day. Sentence8: We have one. The Man on The Moon. But it is located in the centre area of town. Would you like more information? Sentence9: Ok, perfect. Thanks! Sentence10: i have four results that match your request, do you need internet? Sentence11: I have the Hobsons House. It is a moderately priced guesthouse located in the west. Free wifi and internet. Can I assist you in booking a room? Sentence12: Internet is not necessary. But can you see if there is one in the west part of town and I would prefer a guesthouse. Question: Who has spoken the sentence 10? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Price range doesn't really matter, but I do want a 4-star place with free parking and internet. Sentence2: I have 19 hotels that match that criteria. please be more specific about the area of town where you'd like to stay Sentence3: Do you prefer a formal hotel, or a guesthouse? Sentence4: OK, what price point do you want me to look for? Sentence5: Booking was successful at the alexander bed and breakfast. Reference number is : MDB2AV4K Sentence6: i need a place to stay Sentence7: The area doesn't matter. Please book for 6 people on Saturday with 4 nights stay. Sentence8: Can you give me a suggestion for a hotel and make that reservation please? Thanks. Question: Who has spoken the sentence 4? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: I want a train going to london kings cross. Sentence2: I would like to travel on monday and leave after 15:30. Sentence3: Have a great trip. Sentence4: Thanks, that is all I need. Sentence5: Booking was successful.Reference number is : 1HLAC0TN . Sentence6: Yes I would like to book it for 2 nights from Saturday for 3 people please. Sentence7: Please book the 17:70 for 3 people. Sentence8: Yes please it needs to be for three people. Sentence9: Sorry about that. Worth House is a cheap guesthouse located in the north. Sentence10: I was able to book it, reference number is M9MIP9U1 Sentence11: There are four trains that depart every two hours. The earliest leaves at 17:70 and the last one leaves at 23:00. What's your preference? Sentence12: Great, thanks! Also, can you tell me about the Worth House, please? Sentence13: I didn't ask about a restaurant. I'm pretty sure that's a hotel. Sentence14: I am departing from cambridge. Sentence15: We have 70 trains that meet that criteria, what is your point of departure please? Sentence16: Great! What day would you like to leave? Do you have any preferred times to leave and arrive by? Sentence17: Actually, the earliest train, TR7786 leaves Cambridge at 17:00 and arrives at 17:51. Should I go ahead a book this for 3 people? Sentence18: i am not sure is that a restaurant? Question: Who has spoken the sentence 15? (A) User (B) System
Example Output:
Answer: (B) System