You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Can you please book a flight ticket from BOS to DCA?

ASSISTANT: Sure, may I know your travel dates?

USER: Thank you. I have planned my travel dates as Sept 26 and Sept 28.

ASSISTANT: Do you have any specifications?

USER: I am looking for single connecting flight so please check with that.

ASSISTANT: Please wait a moment.

USER: Sure, take your time.

ASSISTANT: May I know your name?

USER: Sure, myself Larry Hill.

ASSISTANT: Flight-1025 is available with Delta airlines having single connection and the ticket costs you 100 only in economy class. Are you comfortable with this flight?

USER: That is fine, please proceed with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you.

USER: Most welcome.