I need to take a train from Cambridge to London Kings Cross, it would need to be after 10. Okay. What day will you be traveling? On Friday after 10. The TR1502 leaves friday at 11:00. Yes, that will be great. How much does a ticket cost? A ticket is 23.60 pounds. Can you also give me the travel time? The travel time is 51 minutes. Thanks! Can you also see if there are any expensive, 4-star guesthouses in the north area of town? What you are looking for can not be found. Is there any other area you would mind searching in? No I want to stay in that area. What other hotel accomadations are in the area? Avalon is a moderate priced 4 star guesthouse in the north part of town. It has free internent. Would you like more information or can I book it for you? Can you book it for 4 people and 4 nights starting from Monday? Booking was successful.Reference number is : 1VF2W9YC .