You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I would like to book a ticket from IAD to CLT.

ASSISTANT: Sure, we are happy to help you. Can I have your travelling dates?

USER: Departure is by Nov, 23 and return date is Nov, 25.

ASSISTANT: Do you prefer any break in between journey?

USER: I would prefer connecting flight.

ASSISTANT: Are there any other specifications for you?

USER: I prefer business class.

ASSISTANT: May I know your good name?

USER: My name is Margaret Perez.

ASSISTANT: American Airlines is providing connecting flight with the ticket fare of 400 and depart time is 8:00 hours, arrival time is 6:00 hours. Shall I proceed?

USER: Please book a flight.

ASSISTANT: Ok, your ticket is reserved in an business class and the flight number is 1019.

USER: Thanks.

ASSISTANT: Thank you for choosing us.