You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Need your assistance for booking to IAD with a direct flight.

ASSISTANT: Sure, may I know your source airport code please?

USER: Sure, my nearest boarding airport is LAX.

ASSISTANT: Can I have your planned journey dates please?

USER: My planned journey dates are August 12 and 14.

ASSISTANT: Please help me with your name.

USER: Sure, my name is Ryan Martinez.

ASSISTANT: Do you have any specifications?

USER: I need a flight in economy class.

ASSISTANT: Ryan Martinez, no flights has been found on your requirement.

USER: Ok, thank you.

ASSISTANT: Thank you for approaching us.