You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Can you help me booking a flight ticket from LAS to IAD?

ASSISTANT: Sure, may I know your journey dates?

USER: I will start on 03/02 and return on 03/04.

ASSISTANT: Can I know your class preference?

USER: No, I am comfortable with any class.

ASSISTANT: Do you need a connecting flight?

USER: I need a break in my journey.

ASSISTANT: We found a flight of Jetblue airline, flight number 1013 with the fare of 100. Shall I proceed?

USER: Proceed with the booking.

ASSISTANT: May I know your name?

USER: I am Barbara Lopez.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for choosing us.