You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I amend you at the moment?

USER: I am Patrick Parker.

ASSISTANT: Ok.

USER: I need to go to Atlanta, ATl for enjoying purpose. Can you help me in booking?

ASSISTANT: Sure, May I know the other airport code?

USER: I am boarding from Phoenix, PHX.

ASSISTANT: Ok, Help me with your planned travel dates?

USER: My planned dates are from 04/07 to 04/09.

ASSISTANT: Is there any price restriction? Ok, please wait.

USER: Sure.

ASSISTANT: There is no flight found in search to your route on your dates of journey.

USER: Ok, No problem.

ASSISTANT: Thanks for your presence.

USER: Thank you.