You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am planning to visit my brother marriage at LAX, can you help me with booking?

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

USER: My travel dates are Feb 21 and Feb 23.

ASSISTANT: May I know your boarding point?

USER: My boarding point is DCA.

ASSISTANT: Let me know your connection limit.

USER: I need a connecting flight.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your name please?

USER: I am Brenda Edwards.

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

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for opting us.