Hello, myself Patrick Hall.
user
Hello. How can I help you?
assistant
I want to book a ticket from DEN to OAK, can you please help me?
user
Help me with the dates please.
assistant
My travel dates are 10/18 to 10/20.
user
Give me a minute.
assistant
Sure, but please look for connections 1.
user
There is a flight with airline:UA and fare is 300. And connection is as per your request.
assistant
Please book a ticket for me.
user
Can I book it? Your ticket is booked with number 1027. Have  a safe journey.
assistant
Thank you for helping me in booking the ticket.
user
Welcome.
assistant