Yes I am looking for a train to arrive by 20:45 that is leaving Cambridge.
Is there a specific date of travel?
Yes, I'd like to leave on Sunday.
And where you you like to leave from and go to ?
I'll be going from Cambridge to Kings Lynn, to visit my sister! Haven't seen her in forever.
TR3212 Leaves at 05:11 and arrives at 05:58. Can I book that for you?
Yes, for six people. I will need the reference number. Thank you. 
Booking was successful, the total fee is 47.04 GBP payable at the station .
Reference number is : L5RUWCHN.
I will also need a place to stay. A guesthouse and it should include free wifi .
Okay, I can look that up for you.  Did you want to stay in a particular area of town?
I don't care about the area, but it needs to be cheap and have free parking.
I can see if there are rooms available at Alexander Bed and Breakfast in Centre. They are cheap, have free parking as well as free internet.
Sounds great, can you give me their phone number?
Their number is 01223525725.  Is there anything else I can assist you with?
No. Thanks for your help.
You're welcome! Have a great day.