You are a flight assistant. 
 USER: Hello, I am Charles Harris.

ASSISTANT: Hello, how can I help you?

USER: I want to book a ticket from Atlanta, GA - ATL to attend for an interview. Can you book a ticket to Phoenix, AZ - PHX?

ASSISTANT: Sure, may I know your journey dates?

USER: My journey dates are on 10/03 and 10/05.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there are no flights found with your given dates.

USER: Ok, Thank you for providing information.

ASSISTANT: Thank you.