You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Dennis Martinez.

ASSISTANT:  How can I aid you?

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

ASSISTANT: May I know your travel dates?

USER: My travelling dates are 04/22 to 04/24.

ASSISTANT: Do you have any preference?

USER: I need a halt.

ASSISTANT: We found a connecting flight Hawaiian with flight number 1022 and fare is 100.

USER: Please proceed to book.

ASSISTANT:  Your booking is confirmed.

USER: Thank you.

ASSISTANT: Thank you for opting us.