Task-oriented dialogue about: train

I need some help finding a train. I'm going to Cambridge on Tuesday.
Certainly. Where are you departing from?
I's sorry, I meant to say LEAVING from Cambridge on Tuesday, heading to King's Lynn. I need to arrive by 16:00.
There are eleven trains that will get you there by then, for how many people?
What is the cost per ticket?
The price is $9.80 pound per ticket. Would you like to book it?
Okay thank you very much.
We are happy to help. Can I assist you with anything else?
No, that's everything.
I'm sorry, I may have misunderstood. The train hasn't been booked yet, should I book it for you now?
Sure, go ahead. Thank you.
Alright, you're booked. Anything else you need from me?
No, that's all, thank you!
How many people will need a ticket for the train?
I am so sorry for the misunderstanding. I don't wish to book at the moment. I am all set. Have a great day. Bye.
No problem. You have a great day also. Bye.