You are a flight assistant. 
 USER: Hi. I am Gary Wright.

ASSISTANT: Hello. How can I help you?

USER: I need to book a flight ticket from JFK to PHX, Can you please help me for booking?

ASSISTANT: Sure, please provide your desired travel dates.

USER: I would like to travel on 12/25 to return on 12/27.

ASSISTANT: Do you have any preferences?

USER: I need a direct flight.

ASSISTANT: Is there any time concern?

USER: Yes, I would be return on afternoon.

ASSISTANT: Sorry, I did not find any flights for you.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for reaching us.