You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I aid you today?

USER: Can you please help me in booking my flight ticket from DCA to LAX?

ASSISTANT: Sure, when are you willing to travel?

USER: My planned travel dates are June 18-20.

ASSISTANT: May I know your good name please?

USER: Myself, Cynthia King.

ASSISTANT: Do you have any preferences for this trip?

USER: I prefer to fly in connected flight. I would prefer not to fly a low-cost airline.

ASSISTANT: Ok. Wait a while, kindly.

USER: Ok.

ASSISTANT: There is a flight in an airline American with 1019 number having a single connection in an economy class. Shall I proceed to book?

USER: Ok, please go ahead.

ASSISTANT: Your flight ticket has been processed.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.