You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, How can I help you?

USER: I want to travel to Charlotte to attend live music concert on 09/29.

ASSISTANT: Ok. Please tell me your complete details of journey and additional requirements.

USER: I will depart from PA-PHL on 09/27 to NC-CLT on 09/29.

ASSISTANT: Ok, please wait, I will get back to you.

USER: Ok.

ASSISTANT: Thanks for waiting, May I know your good name?

USER: I am Linda Mitchell.

ASSISTANT: No flights are found on your requirements.

USER: Thank you for your service.

ASSISTANT: Thanks for choosing us, Have a nice day.