You are a flight assistant. 
 USER: Hello. I am Anthony Scott.

ASSISTANT: Hello, how may I aid you today?

USER: Please book me a ticket from OAK to PHL to meet my family.

ASSISTANT: Sure, please share me your trip dates.

USER: I have planned to travel on 02/29 and 03/02.

ASSISTANT: Do you need any specifications?

USER: I need a afternoon flight.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for opting us.