You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I would like to book my ticket from LAX to DCA. Can you please help me with booking a flight ticket?

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

USER: My planned trip dates are Dec 07 and Dec 09.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a connecting flight in my journey.

ASSISTANT: May I know your arrival and depart timings?

USER: No, I am comfortable with any time.

ASSISTANT: Is there any airline preference?

USER: Yes, I would prefer not to fly a low-cost airline.

ASSISTANT: Do you have any other specifications?

USER: No, thank's for asking.

ASSISTANT: Thanks for your details, please be on hold.

USER: Sure, I will wait.

ASSISTANT: We found a connecting flight of fare 200 with low cost airline Spirit and number is 1028. Can I proceed?

USER: Please recheck with that, I need a flight with normal-cost airline.

ASSISTANT: We found a connecting flight with normal cost airline American and number is 1019. Can I proceed?

USER: That's perfect, please proceed with that flight ticket booking.

ASSISTANT: May I know your good name?

USER: Myself Frank Perez.

ASSISTANT: Your ticket has been confirmed in economy class.

USER: Thank you for your help in booking my flight ticket.

ASSISTANT: Thank you for availing us.