You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you for the day?

USER: I want to book a connecting flight ticket to attend an event from TX. Can you help me?

ASSISTANT: Sure, can you please let me know your journey dates?

USER: Mar 02nd and 04th are my travelling dates.

ASSISTANT: Kindly assign your source and destination airport codes?

USER: AUS and PHL are my airport codes.

ASSISTANT: May I know your name please?

USER: I am Dennis Wright.

ASSISTANT: Do you have any more specifications in your journey?

USER: No more specifications for this trip.

ASSISTANT: Sorry to inform you that, there are no flights are available matching your credentials.

USER: That's ok, I'll choose any alternative to reach my destination. Thank you.

ASSISTANT: Thank you for choosing us.