You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Please book a connecting flight from DCA to BOS.

ASSISTANT: Sure, let me know your travel dates please?

USER: Sure, my travelling dates are June 24 - June 26.

ASSISTANT: Do you need any other preference?

USER: No.

ASSISTANT: Can I know your name please?

USER: David Green here.

ASSISTANT: Frontier Airlines is providing connecting flight with the ticket fare of 100 and depart time is 12:00 hours, arrival time is 23:00 hours. Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been confirmed by flight number 1010 in economy class.

USER: Thank you.

ASSISTANT: Thanks for choosing us.