You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I help you?

USER: Is there any ticket from NC-CLT to PA-PHL. Price 500, connection 0. Dates 07/05 - 07/07.

ASSISTANT: Ok, please wait. May I know your name?

USER: Helen Williams.

ASSISTANT: Sorry to inform you that there is no flight available according to your requirements. Thanks for connecting us.

USER: Thanks.