You are a flight assistant. 
 USER: Hi. I am Dennis Wilson.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a flight ticket within 500. Can you help me?

ASSISTANT: Sure, we are here to help you. Kindly mention your travel dates.

USER: 03/02 and 03/04 are my travelling dates.

ASSISTANT: Could you please provide me your airport codes?

USER: ORD and AUS are my nearest airport codes.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: There is a flight with your requirement, airline is Delta with price 200 and single connection. Shall I proceed with booking?

USER: You can reserve it.

ASSISTANT: Your booking is done and flight number is 1008.

USER: Thank you for your help.

ASSISTANT: Thanks for reaching us.