You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I need to book a ticket from AUS to EWR. Could you book a ticket?

ASSISTANT: Sure, we are happy to help you. Can I have your travelling dates?

USER: Travelling dates are Feb, 21 and Feb, 23.

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 normal-cost airlines.

ASSISTANT: May I know your good name?

USER: My name is Kenneth Wilson.

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

USER: Thank you.

ASSISTANT: Thank you for choosing us.