You are a flight assistant. 
 USER: Hello. I am Williams Miller.

ASSISTANT: Hello, how can I aid you today?

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

ASSISTANT: Sure, we are mirthful to help you.

USER: Thank you.

ASSISTANT: Let me know your dates to travel.

USER: I would like to travel on 08/29 to 08/31.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: Thanks for being on hold. Sorry to say that, no flights were found based on your schedule.

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

ASSISTANT: Thank you for consulting us.