You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am planning to visit Washington, will you help me in booking the flight ticket from MSP to DCA?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My travel dates are Oct 22 and Oct 24.

ASSISTANT: May I know your connection limit?

USER: I need a flight with single connection.

ASSISTANT: Do you have any other requirements?

USER: I prefer to return in evening time.

ASSISTANT: May I know your name please?

USER: Myself Shirley King.

ASSISTANT: Ok, please wait for a moment.

USER: Ok, I will wait.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for opting us.