You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I serve you?

USER: I am Stephanie Carter. I need your assistance to book my flight ticket to Atlanta, ATL for my sisters baby shower occasion.

ASSISTANT: Sure, may I know your planned travel dates?

USER: My planned dates of travel are 09/09 - 09/11.

ASSISTANT: May I know your further journey details?

USER: I need a lay by between my travel. My source code is Philadelphia, PHL . Fare of ticket should be with in 500.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, sorry to say that, no flights were found with your details.

USER: Ok, I will choose other airline.

ASSISTANT: Thanks for choosing us.

USER: Thank you for quick service.