You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am Betty Lewis. I want to book a flight ticket to attend a party at WA-SEA from DC-DCA .Can you help me?

ASSISTANT: Sure, please let me know your travelling dates?

USER: 02/27 and 02/29 are my travelling dates.

ASSISTANT: Ok, any other specifications?

USER: I need a connecting flight.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Thanks for waiting, no flights found with your requested details.

USER: No issue. Thank you for your response.

ASSISTANT: Thank you for opting us.