You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Could you help me in booking a direct flight with the name of Karen Young?

ASSISTANT: Sure, may I know your journey codes please?

USER: I have a meeting at Charlotte, CLT. By leaving the Philadelphia, PHL.

ASSISTANT: Please share your journey dates to proceed further.

USER: From 09/28 to 09/30.

ASSISTANT: Wait a minute please.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry no flights found with your details.

USER: Ok. Thank you for your information.

ASSISTANT: Thank you for reaching us, have a nice day.