You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I would like to book a ticket from DFW to ATL.

ASSISTANT: Sure, I am here to help you. May I know your travelling dates?

USER: Travelling dates are from Dec, 23 to Dec, 25.

ASSISTANT: Do you prefer any break in between journey?

USER: I would prefer connecting flight.

ASSISTANT: Are there any other specifications for you?

USER: I prefer business class.

ASSISTANT: Can I have your good name?

USER: My name is Jacob Moore.

ASSISTANT: Sorry, no flights are available on your journey routes.

USER: Thank you.

ASSISTANT: Thank you for contacting us.