You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Myself Linda Clark, I have  a conference at White House in Washington DC - DCA. Can you help me with booking?

ASSISTANT: Sure, when are you willing to travel?

USER: Ok, my travel dates are 08/09 and 08/11.

ASSISTANT: Ok, let me know your departure airport code?

USER: Sure, my source airport is Chicago, IL - ORD.

ASSISTANT: Ok, let me know your connection limit?

USER: Sure, I need a lay by.

ASSISTANT: Ok, please hold on a moment.

USER: Ok.

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

USER: Ok, not an issue.

ASSISTANT: Thank you for opting us.

USER: Thank you for your information.