You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you please help me in booking a flight ticket from DCA to BOS?

ASSISTANT: Can you mention your trip dates?

USER: Sure, my travel dates are from July 30 to Aug 01.

ASSISTANT: Do you need any connections?

USER: I would prefer connection flight.

ASSISTANT: Are there any other preferences?

USER: No.

ASSISTANT: May I know your name?

USER: Myself Justin Nelson.

ASSISTANT: Connecting flight number 1003 in economy class with price 100 is available. Is it ok?

USER: Ok, please book that flight.

ASSISTANT: Your ticket is booked.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.