You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What assistance that you need from my side?

USER: I would like to book a flight from PHL to AUS to meet my uncle. Could you please help me with booking a flight ticket?

ASSISTANT: Sure, on what dates that you would like to book the ticket?

USER: Oct 9 and Oct 11 are my travelling dates.

ASSISTANT: Do you have any other requirements?

USER: Yes, I want to depart in the afternoon.

ASSISTANT: May I know your name please?

USER: I am Christopher Carter.

ASSISTANT: Thank you for your information, I regret to inform you that non of the airlines is providing a flight on your journey dates to reserve a flight ticket for your flight journey.

USER: No worries, thank you for the information.

ASSISTANT: Most welcome and thank you for reaching us.