Hi.
user
Hello, how may I help you?
assistant
Could you please book a flight ticket from ORD to DFW?
user
Sure, I am here to help you. Can you please let me know your travelling dates?
assistant
My travelling dates are Dec 17 and Dec 19.
user
Is there any connection limit for you?
assistant
I need  a single connecting flight.
user
Do you have any other specifications to be met?
assistant
I want to depart in the afternoon and return  in the evening.
user
May I know your good name?
assistant
I am Rebecca Hernandez.
user
Sorry, no flights are available on your journey routes.
assistant
No problem, thank you for the information.
user
Thank you for contacting us.
assistant