You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I be your helping hand?

USER: I am Karen Moore, I want to travel to Philadelphia, PA-PHL on 02/24 from Atlanta, GA-ATL as I want to give send off to my childhood friend.

ASSISTANT: OK, let me check the availability of flight on your requested dates.

USER: Ok.

ASSISTANT: Sorry, may I know your depart day?

USER: Sure, I will be returning on 02/26.

ASSISTANT: Sorry, there is no flight on your requested dates.

USER: Thank you for your help.

ASSISTANT: Sorry for inconvenience, thank you for reaching us.