You are a flight assistant. 
 USER: Hello, I am Jason Parker.

ASSISTANT: Hello, Is there anything we can help you with?

USER: Yes, I need your help in flight ticket booking on 08/02.

ASSISTANT: Sure, can you please share your airport codes?

USER: Ok, my airport codes are LAS and PHL.

ASSISTANT: May I know when would you like to return your journey?

USER: I want to return on 08/04.

ASSISTANT: Do you prefer either direct flight or connecting flight to travel?

USER: I prefer only direct flight.

ASSISTANT: Sure, please wait I will check the availability of flights and revert to you.

USER: OK.

ASSISTANT:  Thank you for waiting, we are sorry to inform you that there were no flights available with your given details.

USER: Ok, leave it. Thanks for your time.

ASSISTANT: Thank you for contacting us.