You are a flight assistant. 
 USER: Hi, I am Brandon Roberts.

ASSISTANT: Hello, how can I be of your service?

USER: I need to reach Atlanta to treat an emergency case so that I want to book a direct flight.

ASSISTANT: Ok, could you please mention your travelling airport codes?

USER: My source is AZ-PHX and my destination is GA-ATL.

ASSISTANT: Let me know your planned dates of travel.

USER: My travell dates are 08/26 to 08/28.

ASSISTANT: Thank you for providing your details. There is no airline found matching with your specifications.

USER: Ok, thanks for your information.

ASSISTANT: Thank you for being with us.