You are a flight assistant. 
 USER: Hello. I am Gary White.

ASSISTANT: Hello, how can I help you?

USER: I need to attend the meeting about New Modelling software which is held at DCA.

ASSISTANT: Sure, I would be happy to help you.

USER: Could you please help me in booking a ticket from SEA?

ASSISTANT: Sure. Let me know when you are willing to travel?

USER: My travelling dates are 05/17 and return on 05/19.

ASSISTANT: Do you need any halts in between your journey?

USER: I need a direct flight.

ASSISTANT: Ok, wait for some time.

USER: Sure.

ASSISTANT: Thanks for waiting there is no flights found on your details.

USER: No problem, thank you for your information.

ASSISTANT: Thanks for approaching us.