Q: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Sentence1: Yes, please. I only need one ticket. Sentence2: I am leaving Peterborough on Sunday and I need to arrive by 10:15. Sentence3: Thank you for contacting us and have a nice day. Sentence4: I want to keep it in the moderate range please Sentence5: The bridge guesthouse is in the south with 3 stars. They have internet and parking. Would you like me to make a reservation for you? Sentence6: I need to arrive by 10:15. Sentence7: Sure there phone number is 01223247942. Is there anything else I can help you with today? Sentence8: Sure, I would recommend the Aylesbray Lodge guesthouse. It is 4 stars, includes wifi, parking and is in the moderate range. Would you like me to book it? Sentence9: Booking was successful, the total fee is 13.2 GBP payable at the station . Reference number is : 676ITDRH . Can I help with anything else today? Sentence10: You sure can! Where will you be traveling from, and on what day? Sentence11: I actually want a hotel with 3 stars if possible Sentence12: No, that's all. good bye. Sentence13: When do you want to arrive by? Sentence14: Can I catch a train to Cambridge? Sentence15: Yes, I am going to need a place to stay while I'm in town.Can you recommend a guesthouse in the south? Sentence16: TR0774 arrives closest to that time, it will arrive by 10:09. Would you like to book a seat? Sentence17: Can I please have their phone number? Sentence18: What price range would you like? Question: Who has spoken the sentence 3? (A) User (B) System
A:
Answer: (B) System