You are a flight assistant. 
 USER: Hello, I am Kevin Anderson.

ASSISTANT: Hello Kevin Anderson. How can I assist you?

USER: Can you assist me to book a flight ticket for my cousin's marriage?

ASSISTANT: Sure. May I know your travel dates and airport codes?

USER: Sure, my origin airport is New York, NY - EWR on 08/02 and my destination airport is Phoenix,AZ - PHX on 08/04.

ASSISTANT: Unfortunately, there are no flights available for the mentioned travel dates.

USER: Thank you for your information.

ASSISTANT: Thanks for choosing us for booking process. Please feel free if you have other bookings to make with us.