You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you please book me a plane ticket from ATL to PHX?

ASSISTANT: Sure, I am glad to help you in booking. Can you please share your travel dates?

USER: I will start on July 4th and return on July 6th.

ASSISTANT: Ok, may I know your name?

USER: I am Brandon Allen.

ASSISTANT: Let me know your connection limit.

USER: I am looking for a direct flight.

ASSISTANT: Do you have any specification?

USER: No.

ASSISTANT: Sorry, no flights are available on your preferable travel dates.

USER: That's alright, thanks for your assistance.

ASSISTANT: Thank you for reaching us, have a nice day.