You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: Myself Gregory Hall.

ASSISTANT: Hello Hall.

USER: Can you please help me in booking a flight ticket from AUS to LGA locations please?

ASSISTANT: Sure, could you please provide your preferable dates that you want to travel?

USER: My travelling dates are from 07/08 and 07/10.

ASSISTANT: Ok, please hold on a moment to check the availability of flights and I will revert you.

USER: Sure.

ASSISTANT: Based on your information, flight number 1014 from Delta airlines with 1 connection with the fare of 800 is available for you. Is it ok for you?

USER: My budget is just 200. It's ok.

ASSISTANT: Can I proceed?

USER: I'll try for the vacation in some other time. Please don't book the ticket. Thank you for the information.

ASSISTANT: Sorry there are no flights available with in that budget. Thank you for reaching our service.