You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I assist you?

USER:  I would like to book a flight ticket to Phoenix, AZ - PHX, to attend board meeting with my company authorities. Can you book me a flight ticket on the name of Scott Jackson?

ASSISTANT: May I know your other airport code?

USER: I want to start from my nearest airport Philadelphia, PA - PHL.

ASSISTANT: Please share me your travelling dates?

USER: I would like to fly on 03/26. I intend to catch my return flight on 03/28.

ASSISTANT: Do you have any other specifications?

USER: Yes, Make sure it must be a direct flight.

ASSISTANT: I apologise that there are no flights found with your specifications.

USER: Ok, no problem at all. Thanks for the excellent service.

ASSISTANT: Thanks for opting us.