You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Can you please help me to book a flight from DCA to CLT?

ASSISTANT: Ok, please can I know the dates of your journey?

USER: My journey dates are from Nov 19 to Nov 21.

ASSISTANT: Ok, please can I know the specification your looking?

USER: I need 1 connection.

ASSISTANT: Ok, please can I know your name?

USER: I am Margaret Hall.

ASSISTANT: Ok, there is a connecting flight available for the airfare 300 and the airlines is Hawaiian. Can I book the flight 1021?

USER: Book it.

ASSISTANT: Ok, the fight ticket has been confirmed and the class is economy.

USER: Thank you.

ASSISTANT: Thank you for choosing our agency, have safe journey.

USER: Welcome.