Will I be able to get a train out of London Liverpool Street that leaves after 15:15, or will I need to use a different station?
What day would you like to leave?
I need to be there on Friday. 
There is no train leaving at 15:15. However there is leaving at 15:39 on Friday, would you like that one?
I don't have to leave at exactly 15:15. I just need to leave after that time and travel to Cambridge.  What are my choices?
There is a train at 15:39 and every other hour after that.
I would like to book it for Friday for 7 people and will need a reference number.
Booking was successful, the total fee is 116.2 GBP payable at the station. Reference number is : M0H2YQDY. Is there anything else I can do for you?
I am also looking for a place to stay.  With free parking and one star.
I'm afraid that I didn't find any. Would you like to try for a different star rating?
Try for a 4 star instead. 
Sure thing I would suggest this one arbury lodge guesthouse.
Okay can you make a booking for 4 nights from Friday for 7 people.
Booking was successful.
Reference number is : T4EBBLA6.
Okay, great. Thanks for your help!
Do you need anything else today?
That is all I will need. 
Have a great day and stay!
Good day to you too, goodbye
Thanks! And if you think of anything more that you need, feel free to contact us again!