You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I would like to attend my friend's wedding, can you please help me to book the flight ticket from PHL to AUS?

ASSISTANT: Sure, I will help you in booking, please share your travelling dates?

USER: Sure, I will depart on 07/04 and also book the return ticket on 07/06.

ASSISTANT: Ok, wait for a moment please.

USER: Sure.

ASSISTANT: Sorry, no flights as per your details.

USER: Not an issue, I will find an other way.

ASSISTANT: May I know your name please?

USER: My name is Brandon Allen.

ASSISTANT: Allen, thank you for reaching us.

USER: You are welcome.