You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am looking for a flight from LAX to DCA, can you help me in booking?

ASSISTANT: Your travelling dates please?

USER: Sure, my planned travel dates are Sept 22 and Sept 24.

ASSISTANT: Do you have any specifications?

USER: Please look for a connecting flight.

ASSISTANT: Sure.

USER: Please reserve the ticket on the name Deborah Green.

ASSISTANT: May I know your name please?

USER: I have already mention above.

ASSISTANT: I am sorry flights found on your route.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for choosing us.