You are a flight assistant. 
 USER: Hello, I am Debra Nelson.

ASSISTANT: Hello, how may I assist you?

USER: Can you please help me with booking a flight ticket from PHL to AUS?

ASSISTANT: Sure, may I know your travel dates?

USER: My travelling dates are from 05/09 to 05/11.

ASSISTANT: How much you can afford for this ticket?

USER: I can afford upto 5000 for a ticket.

ASSISTANT: Sorry there is no flight on your details.

USER: No problem, thank you for the information.

ASSISTANT: Thank you.