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

ASSISTANT: Hello, how can I assist you?

USER: I want to visit the beautiful places in Atlanta. Can you please book a ticket ?

ASSISTANT: Dennis Campbell, can your share your journey details?

USER: I need a flight ticket with a price limit of 500. I would like to start from Houston, TX - HOU and return from GA - ATL. I need a direct flight.

ASSISTANT: Ok, Can I know your journey dates to book a ticket?

USER: I have to depart on 11/01 and return on 11/03.

ASSISTANT: We haven't found a direct flight with your requirements. Can I proceed booking?

USER: No Don't proceed.

ASSISTANT: Ok, thank you.

USER: Thank you for your information.

ASSISTANT: Have a nice day.