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

ASSISTANT: Hello, how may I aid you today from my end?

USER: I am planning to shoot a documentary in PHL, will you please help me in making an airline reservation from DFW?

ASSISTANT: Sure, I am here to help you out. Please provide me your trip dates.

USER: My trip dates are Mar 1st and Mar 3rd.

ASSISTANT: May I know your destination airport code?

USER: My destination airport code is PHL.

ASSISTANT: Sorry Linda Williams, there is no flight with your travel dates.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for reaching us.