You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you aid me to book my ticket from AUS to PHL?

ASSISTANT: Sure, I am here to help you. Can I have your travelling dates?

USER: My trip dates are May 29 and May 31.

ASSISTANT: Do you have any other specifications?

USER: I prefer for connecting flight.

ASSISTANT: May I know your good name?

USER: Anna Lee here.

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

USER: Thank you.

ASSISTANT: Thank you for choosing us.