You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you today?

USER: I want to book a ticket from IAD to ORD, can you help me?

ASSISTANT: Please tell me your name?

USER: Myself Raymond Davis.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: May I know your class preference?

USER: I prefer to travel in economy class.

ASSISTANT: Please let me know your travelling dates?

USER: My trip dates are Nov 25 and 27.

ASSISTANT: Here is a direct flight with fare 200 and 1008 as flight number. Shall I proceed with booking?

USER: You can book it.

ASSISTANT: Ok, your ticket is confirmed in economy class.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.