You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello.

USER: I am Laura Lee.

ASSISTANT: How may I help you Laura Lee?

USER: I am planning to visit independence hall in Philadelphia, PHL. Can you help me to book a direct flight in the evening time?

ASSISTANT: May I know your source airport location code?

USER: My source is from EWR.

ASSISTANT: May I know your travelling dates?

USER: My trip dates are Jan 25 and 27.

ASSISTANT: Evening is your depart time or return time?

USER: I want to depart in evening time.

ASSISTANT: Sorry to say, there are no flights currently available for you.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for approaching our services.