You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, may I know your name please?

USER: I am Jack King.

ASSISTANT: Ok, how can I help you?

USER: I want to meet my great grandparents and to spend some quality time with them at WA-SEA on 09/02.

ASSISTANT: Can you please share your connection preference?

USER: I need a direct flight.

ASSISTANT: Ok, may I know on which date you want to return?

USER: 09/04 will be my return.

ASSISTANT: Could you please provide your source code to proceed further?

USER: I would like to board at DC-DCA.

ASSISTANT: Thank you for providing your details, sorry no flights were found with your details.

USER: No issue. Thank you for your quick response.

ASSISTANT: Thank you for reaching us, have a nice day.