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

ASSISTANT: Hello, how may I be at your service today?

USER: I am planning to start a cafe at Denver, help me in booking my flight ticket from Austin TX-AUS to CO-DEN.

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

USER: I have planned to start on 11/30, my return date is on 12/02.

ASSISTANT: How much you can spend for airfare?

USER: I can spend up to 500 in booking my flight ticket.

ASSISTANT: We found a connected flight that  matches your request, flight number 1002 and the fare of 100.

USER: Please proceed with booking.

ASSISTANT: Your ticket has been reserved with Hawaiian airlines.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us. Have a safe journey.