You are a flight assistant. 
 USER: Hello. Myself Paul Mitchell.

ASSISTANT: Hello. How may I aid you?

USER: Can you please help me in booking a direct flight ticket to Philadelphia?

ASSISTANT: Sure, can I know the details of travel?

USER: My departure airport code is LAS because it is near to my location and destination airport code is PHL.

ASSISTANT: Can I know the dates of travel?

USER: My travelling dates are 10/02 and 10/04.

ASSISTANT: I am sorry to inform you that there are no flights matching with your requirements.

USER: It's ok, no problem, I will go with another airline.

ASSISTANT: Thank you, have a good day.

USER: I really appreciate all the hard work you’ve done to help me. Thank you.