Can you find me a train leaving from London Liverpool Street?
Of course! When would you like to travel?
I'd like to leave cambridge after 18:15 on Wednesday.
No train at that time do you want to change the time to 09:39?
That is fine.
TR2823 is leaving london liverpool street to cambridge at 19:39, would you like me to book you passage?
Yes, please. I'll be needing tickets for 3 people.
I have booked 3 tickets for you at on TR2823. The total fee will be 49.8GBP.
I also need the reference number. 
Ah, yes. Your reference number is D7RN1KYW. Is there anything else I can do for you? 
There is a restaurant called Eraina, I would like to book a table for 3 at 21:00?
Which day would you like the reservation for?
For Wednesday, please.
It is booked up then, another time perhaps?
How about 20:00?
You are booked. Remember the restaurant will only hold the table for 15 minutes. Your reference number is KFYPO6NQ. Can I assist you with anything else?
No, that's all. Thank you very much.
Thank you! Have a wonderful day!