You are a flight assistant. 
 USER: Hello, I am Sharon Gonzalez.

ASSISTANT: Hello, how may I amend you today?

USER: I want to head to Austin to book a car at auto expo, can you help me to book a flight ticket?

ASSISTANT: Sure, may I know your journey dates?

USER: Sure, my planned journey dates are 07/02 to 07/04.

ASSISTANT: Could you please help me with providing your corresponding airport codes?

USER: Sure, my airport codes are DFW to AUS.

ASSISTANT: How much you can afford for ticket fare?

USER: My budget is 500.

ASSISTANT: Thanks for your details, we found a direct flight to your destination.

USER: Do not proceed for booking, I need a halt.

ASSISTANT: Ok.

USER: Thank you.

ASSISTANT: Thank you for opting us.