I need a train that leaves london kings cross on friday
And what is your destination station?
I need to arrive at Cambridge. I want the train to leave after 17:30.
There are 3 trains leaving after 17:30 on Friday, by what time would you like to arrive in Cambridge?
I need to arrive by 5pm.
That's physically impossible. You want to leave after 17:30 which is 5:30 pm and arrive at 5 pm? Try that again please.
Can I get the train ID and arrival time for the first train after 17:30 on Friday, going from Kings Cross to Cambridge?
the TR9139 leaves at 19:17 and arrives by 20:08
I am also looking for de luca cucina and bar, can you help me locate it? 
Gladly. It's located in the centre and it serves modern European food. Would you like me to make a reservation for you?
Yes please, can I get a reservation for Friday at 21:00 for 3 people?
Great choice! Your booking was successful. Here is your reference number 8W4EZQ1E. Anything else I can help you with?
No thank you, that is everything.
I'm happy we could be of service, and enjoy your time in Cambridge!