You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. how can I help you?

USER: Can you please help me in booking my flight ticket from OAK to IAD?

ASSISTANT: Your travelling dates please?

USER: My travelling dates are Feb 04 and Feb 06.

ASSISTANT: Do you have any specifications?

USER: I need my return ticket at evening time.

ASSISTANT: What about your connection limit?

USER: I need direct flight.

ASSISTANT: May I know your name please?

USER: Myself Gary Rodriguez.

ASSISTANT: I am sorry no flights found on route.

USER: Ok, thank you for checking.

ASSISTANT: Thank you for choosing us.