Hi.
user
Hello. How may I help you today?
assistant
I want to book a ticket from DCA to LAS, can you help me?
user
Sure, to reserve a ticket when you are willing to travel?
assistant
My travel dates are May 11 and 13.
user
Please provide your specifications.
assistant
I prefer business class.
user
Can I know your good name please?
assistant
I am Mary Harris.
user
We did not find any flight on your given information.
assistant
No problem, thanks for checking.
user
Thank you for opting us.
assistant