You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you help me to book a flight ticket from AUS to DFW?

ASSISTANT: Sure, I am happy to help you. Can you please let me know your travelling dates?

USER: My travelling dates are 22 to 24 of Apr.

ASSISTANT: Do you have any break in between journey?

USER: I need a connecting flight.

ASSISTANT: Is there any other specifications for you?

USER: I would like to depart in the afternoon.

ASSISTANT: May I know your good name?

USER: I am Dorothy Collins.

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

USER: It's ok, not a problem, thank you.

ASSISTANT: Thank you for choosing us.