Task-oriented dialogue about: train
hotel

I'm looking for information on a hotel called acorn guest house.
Acorn Guest House is a 4-star guesthouse in the North part of town, at 154 Chesterton Road. It is moderately-priced, and has internet and parking. Shall I book a room?
Yes, I would like it for 8 people on Monday.
And how many nights would your party like to stay?
We will be staying for 5 nights.
I was able to succesfully book your room for 8 people and 5 nights. Your reference number is : GCBICIA1 .
Thank you. I am also looking for a train from london kings cross to cambridge on Monday.
what time should the train leave
anytime after 19:45 going to cambridge and leaving london kings cross. I need tickets for 8 and the reference number
I have a 21:17 departure. Would you like a booking?
Yes, please.
Booked! Your reference number is OXVTBQHH .
That's all I need, thank you so much! Have a nice day!
Enjoy your stay.