You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I be there for you?

USER: Will you please aid me in booking a flight ticket from PHL to AUS?

ASSISTANT: Sure, on what dates are you willing to travel?

USER: My travelling dates are Jan 24th and Jan 26th.

ASSISTANT: How many connections do you need?

USER: I need a flight with single connection.

ASSISTANT: Any other requirements to be met?

USER: I prefer to travel in business class.

ASSISTANT: May I know your name?

USER: John Young.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thank you for waiting, I regret to inform you that there are no flights obtained on your journey dates to book a flight ticket.

USER: No issues, thank you.

ASSISTANT: Thank you for choosing us.