Task-oriented dialogue about: train

I need to see some train times for Wednesday.
There are 404 trains running on Wednesday, what point of departure and point of arrival are you interested in?
I need to depart from ely and arrive by 16:30.
I can help you with that. How early do you want to leave because we have trains running as early as 5:35
i want to arrive by 16:30 if possible.
The TR2211 will leave Ely Wednesday arriving at 15:52. Would you like to book that one?
Yes book that for me thank you
I will book that for you now.
Thank you and I need a reference number
How many tickets will you need?
Just one ticket and thank you
Okay. I have booked one ticket for you. The reference number is EHRSRM7K and it will cost 4.4 GBP.
No, that is all. Thank you so much. Goodbye
Thank you for using our system!