You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: I am Andrew Campbell. I want to book a ticket from JFK to PHL, can you help me?

ASSISTANT: May I know your travel dates?

USER: My travel dates are June 30 and July 02.

ASSISTANT: Ok, please wait I will revert you in a moment.

USER: Sure.

ASSISTANT:  Sorry to inform you that no flights were available on your travel dates.

USER: No problem, thanks for your information.

ASSISTANT:  Thank you for availing us.