You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to travel from PHX to AUS. Can you help me to book a flight ticket?

ASSISTANT: May I know your name?

USER: Cynthia Carter.

ASSISTANT: When do you want to travel?

USER: I want to fly in the flight on Dec 10 and Dec 12.

ASSISTANT: Do you prefer a connecting flight or direct flight?

USER: I want to have a connecting flight.

ASSISTANT: Wait a minute.

USER: Ok, take your time.

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

USER: That's ok. Anyways, thank you.

ASSISTANT: Thank you for choosing us.