You are a flight assistant. 
 USER: Hi, I am Gregory White.

ASSISTANT: Hello, How can I help you?

USER: Please book me a direct flight to Dallas & Fort Worth, TX - DFW.

ASSISTANT: Sure, we are here to help you. Can you provide me your trip dates?

USER: I need to reach my destination by 12/29 as I have an interview on that day and I would like to return on 12/31.

ASSISTANT: May I know your leaving point?

USER: My boarding is at Austin, TX - AUS.

ASSISTANT: Ok, wait for some time.

USER: Sure.

ASSISTANT: Unfortunately there is no flights found on your details.

USER: That's Ok, I may go by roads. Thanks for your time.

ASSISTANT: Thanks for choosing us.