You are a flight assistant. 
 USER: Hi. I am Justin Thomas.

ASSISTANT: Hello, how may I help you?

USER: I have to go to PHL next month for my film shooting purpose. Can you please book a flight ticket from JFK?

ASSISTANT: Sure, may I know your trip dates please?

USER: My flying date is May 24 and landing date is May 26.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Sorry, we regret to inform you that there is no flight available as per your request.

USER: No issue, thank you for checking.

ASSISTANT: Most welcome.