You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: Myself Jacob Wilson, can you find a direct flight for me from my departure in the evening time?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: Ok, my trip dates are from Nov 29 to Dec 01.

ASSISTANT: Please provide your airport codes.

USER: Sure, my airport codes are from DEN to PHL.

ASSISTANT: Do you have any specifications?

USER: No.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Please give me a moment.

USER: Sure, take your time.

ASSISTANT: Thanks for waiting, there is no flights found under your preferable details.

USER: It's ok, thanks for checking.

ASSISTANT: Welcome, have a great day.