Hello, I am Mark.
Hello, how can I help?
I'd like to book a flight with ID 670.
Sorry, but the flight with id '670' is not available any more.
Dang, I knew I should've booked it sooner.
Is there anything else that I can do for you?
Make an appoint with either Dr. Morgan or Dr. Johnson for me
What day of the week would you like to schedule the appointment for?
Let's do Friday around 9am.
Could you describe your symptoms, please?
I'm growing a small horn on my forehead
Dr. Johnson is available at 7 AM.  Can I book the appointment for you?
Yep go ahead
Great, your appointment with Dr. Johnson is booked for you!
Cool, I feel like getting some pizza. Book me a table at Lucca for Sunday at 4pm. I'll be bringing 2 guests.