You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: Myself Susan Robinson. I am looking for a flight from DCA to LAX, can you help me in booking the flight ticket from Washington?

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

USER: Sure, my planned travel dates are Apr 25 and Apr 27.

ASSISTANT: Do you have any specifications?

USER: Yes, I am looking for a connecting flight.

ASSISTANT: We found a Frontier Airlines with flight number 1005 having a halt. Shall I proceed to book?

USER: That's fine, please proceed in booking with this flight.

ASSISTANT: Your booking has been processed.

USER: Thank you for your expeditious service.

ASSISTANT: Thank you for approaching us.