I need to find a train that leaves on Saturday and arrives by 08:45
Can you tell me what your departure city and destination are? 
I'll be leaving Cambridge to get to Ely.
TR5344 arrives by 7:50. Does that work for you?
Yes, can you book that for 7?
Booking was successful, the total fee is 24.64 GBP payable at the station, you reference number is NUECBTHH. Will that be all?
Are there anything fun to do in city centre?
My favorite attraction in the centre of the city is a concert hall called Man on the Moon. It is amazing! They are at 2 Norfolk Street. 
what is their postcode?
cb12lf. Is there anything else you need?
That's it.  Thank you.
You're very welcome! Have a great day!