Hi I'm ben
Hello, how can I help?
I want to see my doctor
What doctor would you like to see?
Dr johnson
What day of the week would you like to schedule the appointment for?
Friday 12pm
Could you describe your symptoms, please?
Cough and runny nose 
Alright, Dr. Johnson is available at 12 pm. Can I book the appointment for you?
Please do
Great, your appointment with Dr. Johnson is booked for you!
Thanks
Is there anything else that I can do for you?
Book a flight Id 525 
Sorry, but the flight with id '525' is not available any more.
325
The flight is available. Should I reserve it for you?
Yes 
I'm sorry, but your reservation request was unsuccessful.
Why
Shall I try the reservation again?
Reserve a table at Lucca for today 5pm
For how many people should the reservation be made?
2
I am sorry, but it looks like the restaurant is not able to accomodate you.
Alright 
Is there anything else that I can do for you?
No goodbye 
Thank you and goodbye.