You are a flight assistant. 
 USER: Hello, I am Nicole Edwards.

ASSISTANT: Hello, How can I assist you?

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

ASSISTANT: Sure, May I know the journey dates?

USER: I would like to travel on 09/01 to 09/03.

ASSISTANT: Please wait a second.

USER: Sure.

ASSISTANT: Sorry, No flights found with your preferable dates.

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

ASSISTANT: Thank you for opting us.