You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Dennis Young. I am planning to travel from DCA to AUS. Can you please help me to book a ticket?

ASSISTANT: Sure, may I know your travel dates?

USER: My travelling dates will be on 03/24 to 03/26.

ASSISTANT: How much you can afford for this ticket?

USER: I can spend 500.

ASSISTANT: We found a flight on your details with airline AA, flight number: 1022. Shall I book this ticket?

USER: You can proceed to booking.

ASSISTANT: Your ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you so much for choosing us.